{"id":30711,"date":"2026-07-27T09:36:25","date_gmt":"2026-07-27T04:06:25","guid":{"rendered":"https:\/\/www.jrfadda.com\/exams\/?p=30711"},"modified":"2026-07-27T09:36:25","modified_gmt":"2026-07-27T04:06:25","slug":"ugc-net-paper-1-pde-global-warming-greenhouse-gases","status":"publish","type":"post","link":"https:\/\/www.jrfadda.com\/exams\/ugc-net\/ugc-net-paper-1-pde-global-warming-greenhouse-gases","title":{"rendered":"UGC NET Paper 1 PDE: Global Warming and Greenhouse Gases (GHGs) \u2013 Concepts, Tricks &amp; PYQs"},"content":{"rendered":"<p><b><i>Global Warming and Greenhouse Gases (GHGs)<\/i><\/b><i><span style=\"font-weight: 400\"> are among the most important topics in the <\/span><\/i><b><i>People, Development and Environment (PDE)<\/i><\/b><i><span style=\"font-weight: 400\"> unit of <\/span><\/i><a href=\"https:\/\/www.jrfadda.com\/courses\/ugc-net\/paper-1\" target=\"_blank\" rel=\"noopener\"><b><i>UGC NET Paper 1<\/i><\/b><\/a><i><span style=\"font-weight: 400\">. According to the session, questions from this topic have appeared in previous UGC NET examinations, making it an important area for aspirants preparing for upcoming attempts. The discussion explains the concepts using simple examples, memory tricks, and exam-oriented explanations to help candidates understand the topic more effectively.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">In this article, we will understand the concepts discussed in the session, including atmospheric layers, ozone, ultraviolet (UV) rays, ozone formation, greenhouse gases, and the basics of global warming.<\/span><\/i><\/p>\n<p style=\"text-align: center\"><a href=\"https:\/\/www.jrfadda.com\/exams\/ugc-net-notes\/ugc-net-notes-2025-best-study-material-for-paper-1-and-paper-2-preparation\/\" target=\"_blank\" rel=\"noopener\"><b>View UGC NET Notes 2026 for Paper 1 &amp; Paper 2<\/b><\/a><\/p>\n<p><a href=\"https:\/\/www.jrfadda.com\/course-details\/MTc1NTUxMjU5NHw1Mzg=?utm_source=website_seo1&amp;utm_medium=blog1&amp;utm_campaign=study_planner1&amp;utm_id=seo_3\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-14802\" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-300x75.webp\" alt=\"Study Planner\" width=\"985\" height=\"246\" srcset=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-300x75.webp 300w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-1024x256.webp 1024w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-768x192.webp 768w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-1536x384.webp 1536w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/09\/ai-owered-2048x512.webp 2048w\" sizes=\"(max-width: 985px) 100vw, 985px\" \/><\/a><\/p>\n<h2><b><i>Why Is Global Warming an Important Topic for UGC NET Paper 1?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion, <\/span><\/i><b><i>Global Warming<\/i><\/b><i><span style=\"font-weight: 400\"> is one of the recurring topics from the <\/span><\/i><b><i>People, Development and Environment (PDE)<\/i><\/b><i><span style=\"font-weight: 400\"> unit.<\/span><\/i><\/p>\n<p class=\"responsive-video-wrap clr\"><iframe title=\"UGC NET Paper 1 PDE | GLOBAL WARMING AND GHGs with Tricks Concepts + PYQs Questions\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/S5fqv5Ehy-k?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><i><span style=\"font-weight: 400\">The speaker recommends that aspirants preparing for <\/span><\/i><a href=\"https:\/\/www.jrfadda.com\/exams\/ugc-net\/ugc-net-december-2026\"><b><i>UGC NET December 2026<\/i><\/b><\/a><i><span style=\"font-weight: 400\"> should not skip this topic because it has been asked repeatedly in previous examinations and forms an important part of the Paper 1 syllabus.<\/span><\/i><\/p>\n<h2 style=\"text-align: center\"><span style=\"font-size: 14pt\"><a href=\"https:\/\/www.jrfadda.com\/courses\/ugc-net\" target=\"_blank\" rel=\"noopener\"><b>Enroll UGC NET Foundation Batch Online<\/b><\/a><\/span><\/h2>\n<h2><b><i>Understanding Earth&#8217;s Atmospheric Layers<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The session begins by explaining the different layers of the Earth&#8217;s atmosphere.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the discussion, the atmosphere consists of the following layers:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Troposphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Stratosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Mesosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Thermosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Exosphere<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker introduces these layers before explaining the concepts of ozone, greenhouse gases, and global warming because understanding their location in the atmosphere helps students connect the overall concept.<\/span><\/i><\/p>\n<table>\n<tbody>\n<tr>\n<td><b><i>Atmospheric Layer<\/i><\/b><\/td>\n<td><b><i>Mentioned in Discussion<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Troposphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Contains &#8220;Bad Ozone&#8221; according to the session.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Stratosphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Contains &#8220;Good Ozone.&#8221;<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Mesosphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Upper atmospheric layer discussed in sequence.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Thermosphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Atmospheric layer above the mesosphere.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Exosphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Outermost atmospheric layer.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Good Ozone vs Bad Ozone<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">One of the first concepts explained in the session is the difference between <\/span><\/i><b><i>Good Ozone<\/i><\/b><i><span style=\"font-weight: 400\"> and <\/span><\/i><b><i>Bad Ozone<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<h3><b><i>What is Good Ozone?<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">According to the discussion, <\/span><\/i><b><i>Good Ozone<\/i><\/b><i><span style=\"font-weight: 400\"> is present in the <\/span><\/i><b><i>Stratosphere<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The speaker explains that this ozone layer protects the Earth by preventing harmful ultraviolet (UV) rays from reaching the Earth&#8217;s surface.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Therefore, ozone present in the stratosphere is considered beneficial.<\/span><\/i><\/p>\n<p><a href=\"https:\/\/www.jrfadda.com\/test\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2026\/07\/UGC-NET-Test-Series.jpg\" alt=\"\" width=\"1200\" height=\"400\" \/><\/a><\/p>\n<h3><b><i>What is Bad Ozone?<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">According to the session, <\/span><\/i><b><i>Bad Ozone<\/i><\/b><i><span style=\"font-weight: 400\"> is present in the <\/span><\/i><b><i>Troposphere<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion associates this layer with a higher concentration of greenhouse gases and pollution. For this reason, ozone present in the troposphere is referred to as &#8220;Bad Ozone&#8221; during the explanation.<\/span><\/i><\/p>\n<h2 style=\"text-align: center\"><span style=\"font-size: 14pt\"><a href=\"https:\/\/www.jrfadda.com\/courses\/ugc-net\" target=\"_blank\" rel=\"noopener\"><b>Enroll UGC NET Foundation Batch Online<\/b><\/a><\/span><\/h2>\n<h2><b><i>Difference Between Good Ozone and Bad Ozone<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Feature<\/i><\/b><\/td>\n<td><b><i>Good Ozone<\/i><\/b><\/td>\n<td><b><i>Bad Ozone<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Atmospheric Layer<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Stratosphere<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Troposphere<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Role in Discussion<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Protects Earth from harmful UV rays<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with pollution and greenhouse gases<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Importance<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Beneficial<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Harmful according to the session<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Understanding Ultraviolet (UV) Rays<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion explains that sunlight contains three types of ultraviolet (UV) rays.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">These are:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ultraviolet A (UV-A)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ultraviolet B (UV-B)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ultraviolet C (UV-C)<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker also discusses their effects on human health.<\/span><\/i><\/p>\n<h3><b><i>UV-A Rays<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">According to the session, exposure to <\/span><\/i><b><i>UV-A<\/i><\/b><i><span style=\"font-weight: 400\"> rays may affect the eyes and is associated with cataract-related problems.<\/span><\/i><\/p>\n<h3><b><i>UV-B Rays<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">The discussion states that prolonged exposure to <\/span><\/i><b><i>UV-B<\/i><\/b><i><span style=\"font-weight: 400\"> rays may lead to skin-related problems, including skin cancer.<\/span><\/i><\/p>\n<h3><b><i>UV-C Rays<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">According to the explanation, <\/span><\/i><b><i>UV-C<\/i><\/b><i><span style=\"font-weight: 400\"> rays are described as the most dangerous among the three. However, the session explains that these rays normally do not reach the Earth&#8217;s surface because they are blocked by the ozone layer present in the stratosphere.<\/span><\/i><\/p>\n<h2><b><i>Types of UV Rays<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>UV Ray<\/i><\/b><\/td>\n<td><b><i>Mentioned Effect in Discussion<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV-A<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with cataract-related eye problems<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV-B<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with skin cancer<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV-C<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Described as the most dangerous but normally blocked by the ozone layer<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>How Does the Ozone Layer Protect the Earth?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion, the ozone layer present in the <\/span><\/i><b><i>Stratosphere<\/i><\/b><i><span style=\"font-weight: 400\"> acts as a protective shield.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The speaker explains that this layer prevents harmful ultraviolet radiation from directly reaching the Earth&#8217;s surface, thereby protecting living organisms from excessive UV exposure.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">This is why the ozone present in the stratosphere is described as &#8220;Good Ozone.&#8221;<\/span><\/i><\/p>\n<p><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.govtjobs.alertapp&amp;utm_source=blog&amp;utm_medium=website&amp;utm_campaign=app_download\" target=\"_blank\" rel=\"noopener nofollow\"><img decoding=\"async\" class=\"alignnone wp-image-14807 \" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-1024x341.webp\" alt=\"App JRF Adda\" width=\"989\" height=\"329\" srcset=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-1024x341.webp 1024w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-300x100.webp 300w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-768x256.webp 768w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-900x300.webp 900w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-620x207.webp 620w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app-400x133.webp 400w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/JRF-Adda-in-your-pocket-app.webp 1200w\" sizes=\"(max-width: 989px) 100vw, 989px\" \/><\/a><\/p>\n<h2><b><i>How is Ozone Formed?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion briefly explains the formation of ozone.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the session:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Oxygen undergoes photolysis in the presence of sunlight.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">This process produces oxygen atoms.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">These oxygen atoms combine with oxygen molecules to form ozone.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker introduces this explanation to help students understand the natural formation of the ozone layer before moving toward greenhouse gases and global warming.<\/span><\/i><\/p>\n<h2><b><i>Why Understanding Ozone is Important Before Studying Global Warming<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the session, students should first understand:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Atmospheric layers.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Good Ozone.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Bad Ozone.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">UV Rays.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ozone formation.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">Only after understanding these concepts does the discussion move toward greenhouse gases and global warming, as all these topics are interconnected.<\/span><\/i><\/p>\n<h2><b><i>Key Takeaways from Part 1<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Topic<\/i><\/b><\/td>\n<td><b><i>Key Learning<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Atmospheric Layers<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Good Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in the Stratosphere and protects Earth from harmful UV rays<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Bad Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in the Troposphere and associated with pollution<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV Rays<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">UV-A, UV-B, and UV-C discussed in the session<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Ozone Formation<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Explained through oxygen photolysis in sunlight<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Exam Importance<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Global Warming is highlighted as an important UGC NET Paper 1 topic<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>What are Greenhouse Gases (GHGs)?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">After explaining the ozone layer and atmospheric structure, the discussion introduces the concept of <\/span><\/i><b><i>Greenhouse Gases (GHGs)<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the session, greenhouse gases are naturally present in the Earth&#8217;s atmosphere and play an important role in maintaining a suitable temperature for life. The speaker explains that during the early stages of the Earth&#8217;s existence, nights were extremely cold. Greenhouse gases helped retain warmth, making the planet more suitable for living organisms.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">However, the discussion highlights that excessive human activities have significantly increased the concentration of these gases, leading to global warming.<\/span><\/i><\/p>\n<p><a href=\"https:\/\/www.jrfadda.com\/previous-year-paper\/MQ\/MTE3\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2026\/07\/UGC-NET-Live-PYQ-Test-Series.jpg\" alt=\"\" width=\"1200\" height=\"400\" \/><\/a><\/p>\n<h2><b><i>Why Do Greenhouse Gases Increase?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the session, human activities have accelerated the emission of greenhouse gases through:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Increasing air pollution.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Excessive use of automobiles.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Widespread use of air conditioners and refrigerators.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Burning of fuels and other materials.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Industrial activities.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The discussion explains that as greenhouse gas emissions continue to rise, the Earth&#8217;s average temperature also increases.<\/span><\/i><\/p>\n<h2><b><i>How Does Global Warming Occur?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion, the primary function of greenhouse gases is to trap heat.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">When the concentration of greenhouse gases increases beyond natural levels:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">More heat gets trapped in the atmosphere.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Less heat escapes back into space.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The Earth&#8217;s average temperature gradually rises.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the speaker, this increase in the Earth&#8217;s temperature is referred to as <\/span><\/i><b><i>Global Warming<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<h2><b><i>Greenhouse Effect Explained<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion explains the <\/span><\/i><b><i>Greenhouse Effect<\/i><\/b><i><span style=\"font-weight: 400\"> using a simple example.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Imagine a greenhouse made of glass where plants are grown.<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Sunlight enters through the glass.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Heat gets trapped inside.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The trapped heat cannot easily escape.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">As a result, the temperature inside the greenhouse becomes higher.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the session, this trapping of heat is known as the <\/span><\/i><b><i>Greenhouse Effect<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The same principle is used to explain how greenhouse gases retain heat within the Earth&#8217;s atmosphere.<\/span><\/i><\/p>\n<h2><b><i>Car Example Used in the Session<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The speaker also uses a common real-life example to explain the greenhouse effect.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Imagine a car parked in direct sunlight for several hours.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">When someone opens the door during the afternoon:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The inside of the car feels much hotter than the outside air.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Heat has accumulated inside the vehicle.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The glass allows sunlight to enter but restricts heat from escaping quickly.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the discussion, this example helps students understand how trapped heat raises temperature, similar to the greenhouse effect occurring in the Earth&#8217;s atmosphere.<\/span><\/i><\/p>\n<h2><b><i>Difference Between Greenhouse Effect and Global Warming<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">Although the terms are closely related, the discussion treats them as separate concepts.<\/span><\/i><\/p>\n<table>\n<tbody>\n<tr>\n<td><b><i>Greenhouse Effect<\/i><\/b><\/td>\n<td><b><i>Global Warming<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Heat gets trapped within the atmosphere.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Increase in Earth&#8217;s average temperature due to excessive greenhouse gases.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">A natural process necessary for life.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Occurs when greenhouse gas concentrations increase significantly.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Maintains warmth.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Leads to excessive heating of the planet.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><i><span style=\"font-weight: 400\">According to the session, greenhouse gases naturally help keep the Earth warm, but excessive emissions disturb this balance.<\/span><\/i><\/p>\n<h2><b><i>Major Greenhouse Gases Mentioned in the Session<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion identifies the following greenhouse gases:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Carbon Dioxide (CO\u2082)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Methane (CH\u2084)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Chlorofluorocarbons (CFCs)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ozone (O\u2083)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Nitrous Oxide (N\u2082O)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Water Vapour<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker advises students to remember these gases because questions related to greenhouse gases are commonly asked in UGC NET Paper 1.<\/span><\/i><\/p>\n<h2><b><i>List of Greenhouse Gases<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Greenhouse Gas<\/i><\/b><\/td>\n<td><b><i>Mentioned in Discussion<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Carbon Dioxide (CO\u2082)<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Methane (CH\u2084)<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Chlorofluorocarbons (CFCs)<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Ozone (O\u2083)<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Nitrous Oxide (N\u2082O)<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Water Vapour<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Why Are Greenhouse Gases Called Heat-Trapping Gases?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the session, greenhouse gases trap heat in the atmosphere in a manner similar to the glass panels of a greenhouse.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion explains that:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Solar radiation reaches the Earth.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Heat is absorbed by the Earth&#8217;s surface.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Greenhouse gases prevent a portion of this heat from escaping.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">As greenhouse gas concentrations increase, more heat remains trapped.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">This continuous trapping of heat contributes to rising global temperatures.<\/span><\/i><\/p>\n<h2><b><i>Exam-Oriented Concepts from the Discussion<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The speaker highlights several concepts that aspirants should remember for UGC NET examinations.<\/span><\/i><\/p>\n<table>\n<tbody>\n<tr>\n<td><b><i>Concept<\/i><\/b><\/td>\n<td><b><i>Exam Relevance<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Effect<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Frequently discussed in environmental science topics.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Warming<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Important conceptual question.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Gases<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Direct factual questions may be asked.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Good Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in the Stratosphere.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Bad Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in the Troposphere.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><i><span style=\"font-weight: 400\">According to the session, understanding these basic concepts helps students answer both conceptual and objective questions.<\/span><\/i><\/p>\n<h2><b><i>Quick Revision<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">Before moving to advanced concepts, the discussion summarizes the following points:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Greenhouse gases naturally help maintain Earth&#8217;s temperature.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Human activities have increased greenhouse gas emissions.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">More greenhouse gases trap more heat.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Trapped heat raises the Earth&#8217;s average temperature.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">This increase in temperature is called <\/span><\/i><b><i>Global Warming<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Carbon dioxide, methane, CFCs, ozone, nitrous oxide, and water vapour are discussed as greenhouse gases.<\/span><\/i><\/li>\n<\/ul>\n<h2><b><i>Key Takeaways from Part 2<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Topic<\/i><\/b><\/td>\n<td><b><i>Key Learning<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Gases<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Naturally present gases that help retain heat.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Human Activities<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Increase greenhouse gas emissions.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Effect<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Heat gets trapped within the atmosphere.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Warming<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Rise in Earth&#8217;s average temperature due to excessive greenhouse gases.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Example<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Glass greenhouse traps heat.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Car Example<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Parked car demonstrates heat trapping.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Important GHGs<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">CO\u2082, CH\u2084, CFCs, O\u2083, N\u2082O and Water Vapour.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><b><i>What is the Ozone Hole?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">After explaining greenhouse gases and global warming, the discussion moves to the concept of the <\/span><\/i><b><i>Ozone Hole<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the session, some greenhouse gases\u2014particularly <\/span><\/i><b><i>Carbon Dioxide (CO\u2082)<\/i><\/b><i><span style=\"font-weight: 400\"> and <\/span><\/i><b><i>Chlorofluorocarbons (CFCs)<\/i><\/b><i><span style=\"font-weight: 400\">\u2014remain in the atmosphere for a long time. The speaker describes them as <\/span><\/i><b><i>persistent pollutants<\/i><\/b><i><span style=\"font-weight: 400\">, meaning they stay in the environment for an extended period.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion explains that these persistent pollutants eventually reach the <\/span><\/i><b><i>stratospheric ozone layer<\/i><\/b><i><span style=\"font-weight: 400\">, where they weaken it over time.<\/span><\/i><\/p>\n<h2 style=\"text-align: center\"><span style=\"font-size: 14pt\"><a href=\"https:\/\/www.jrfadda.com\/courses\/ugc-net\" target=\"_blank\" rel=\"noopener\"><b>Enroll UGC NET Foundation Batch Online<\/b><\/a><\/span><\/h2>\n<h2><b><i>How Does the Ozone Hole Form?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the session, continuous pollution and increased greenhouse gas emissions weaken the ozone layer present in the stratosphere.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion explains the process as follows:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Greenhouse gases remain in the atmosphere for long periods.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Some gases gradually reach the stratosphere.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">They weaken the protective ozone layer.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">As a result, an <\/span><\/i><b><i>Ozone Hole<\/i><\/b><i><span style=\"font-weight: 400\"> develops.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker mentions that the ozone hole was identified over the <\/span><\/i><b><i>Antarctic region<\/i><\/b><i><span style=\"font-weight: 400\">, making it an important fact for examination purposes.<\/span><\/i><\/p>\n<h2><b><i>Why is the Ozone Hole Harmful?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion, the ozone layer acts as a protective shield against harmful ultraviolet radiation.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">When the ozone layer becomes thinner or develops a hole:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">More ultraviolet rays can pass through.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Greater UV exposure reaches the Earth&#8217;s surface.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The risk of health-related problems increases.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker connects this concept with the harmful effects of UV-A and UV-B rays discussed earlier in the session.<\/span><\/i><\/p>\n<h2><b><i>Health Effects Mentioned in the Discussion<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the session, increased ultraviolet exposure due to ozone depletion may lead to:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Cataract-related eye problems.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Skin cancer (Melanoma).<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The discussion explains that weakening of the ozone layer allows more harmful radiation to reach living organisms.<\/span><\/i><\/p>\n<h2><b><i>What Happens if Ozone Depletion Continues?<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The speaker explains that if greenhouse gas emissions continue increasing without control:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The ozone hole may expand.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The protective ozone layer may become weaker.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">More ultraviolet radiation may reach the Earth&#8217;s surface.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the discussion, this highlights the importance of reducing pollution and greenhouse gas emissions.<\/span><\/i><\/p>\n<h2><b><i>Effects of Global Warming<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The session also discusses the major impacts of increasing global temperatures.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the speaker, global warming can result in:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Melting glaciers.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Extreme weather conditions.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Loss of biodiversity.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Negative effects on agriculture.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Increased environmental imbalance.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">These impacts are presented as important conceptual points for UGC NET Paper 1 preparation.<\/span><\/i><\/p>\n<h2><b><i>Effects of Global Warming<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Impact<\/i><\/b><\/td>\n<td><b><i>Mentioned in Discussion<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Melting Glaciers<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Extreme Weather Events<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Biodiversity Loss<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Agricultural Impact<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Rising Temperature<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Yes<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Global Warming vs Global Cooling<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">An important comparison discussed in the session is between <\/span><\/i><b><i>Global Warming<\/i><\/b><i><span style=\"font-weight: 400\"> and <\/span><\/i><b><i>Global Cooling<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the speaker:<\/span><\/i><\/p>\n<h3><b><i>Global Warming<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">Global warming refers to the increase in the Earth&#8217;s average temperature due to excessive greenhouse gas emissions.<\/span><\/i><\/p>\n<h3><b><i>Global Cooling<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">Global cooling is described as the opposite process, where the Earth&#8217;s average temperature decreases over a prolonged period.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion introduces this comparison to help students distinguish between the two concepts in objective-type questions.<\/span><\/i><\/p>\n<h2><b><i>Difference Between Global Warming and Global Cooling<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Global Warming<\/i><\/b><\/td>\n<td><b><i>Global Cooling<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Earth&#8217;s temperature increases.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Earth&#8217;s temperature decreases.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Associated with increasing greenhouse gases.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with factors that reduce temperature according to the discussion.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Leads to melting glaciers.<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with colder climatic conditions.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Understanding the Albedo Effect<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion introduces another important examination concept\u2014the <\/span><\/i><b><i>Albedo Effect<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the speaker, snow-covered regions reflect a significant portion of incoming solar radiation.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The session associates this reflective property with <\/span><\/i><b><i>Global Cooling<\/i><\/b><i><span style=\"font-weight: 400\">, explaining that surfaces covered with snow reflect more sunlight and absorb less heat.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Students are advised to remember the relationship between <\/span><\/i><b><i>Albedo<\/i><\/b><i><span style=\"font-weight: 400\"> and <\/span><\/i><b><i>Global Cooling<\/i><\/b><i><span style=\"font-weight: 400\"> for examination purposes.<\/span><\/i><\/p>\n<h2><b><i>Aerosols and Global Cooling<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion, aerosols also play a role in global cooling.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The speaker specifically mentions that:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Aerosol particles contribute to cooling.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>Black Carbon<\/i><\/b><i><span style=\"font-weight: 400\"> is discussed separately from other aerosols in the session.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">This distinction is presented as an exam-oriented point that students should remember.<\/span><\/i><\/p>\n<h2><b><i>Persistent Greenhouse Gases<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">Another concept introduced during the discussion is <\/span><\/i><b><i>persistent pollutants<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the speaker, certain greenhouse gases remain in the atmosphere for a very long time, making them more environmentally significant.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">The discussion particularly highlights:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Carbon Dioxide (CO\u2082)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Chlorofluorocarbons (CFCs)<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">These gases are described as persistent because they continue affecting the atmosphere over extended periods.<\/span><\/i><\/p>\n<h2><b><i>Important Exam Concepts Covered<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The speaker highlights several concepts that students should remember for UGC NET Paper 1.<\/span><\/i><\/p>\n<table>\n<tbody>\n<tr>\n<td><b><i>Concept<\/i><\/b><\/td>\n<td><b><i>Key Point<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Ozone Hole<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Identified over Antarctica according to the discussion.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Persistent Pollutants<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">CO\u2082 and CFCs remain in the atmosphere for long periods.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Albedo<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with global cooling.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Aerosols<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Discussed as contributors to cooling (except Black Carbon as explained in the session).<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Warming<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Rise in Earth&#8217;s average temperature.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Cooling<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Decrease in Earth&#8217;s average temperature.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Quick Revision<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">According to the discussion:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Persistent greenhouse gases weaken the ozone layer.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">The ozone hole has been identified over Antarctica.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ozone depletion allows more harmful UV radiation to reach Earth.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Global warming causes melting glaciers and biodiversity loss.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Global cooling is discussed as the opposite of global warming.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Albedo and aerosols are associated with cooling in the session.<\/span><\/i><\/li>\n<\/ul>\n<h2><b><i>Key Takeaways from Part 3<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Topic<\/i><\/b><\/td>\n<td><b><i>Key Learning<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Ozone Hole<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Develops as the ozone layer weakens.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Antarctica<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Mentioned as the region where the ozone hole was identified.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Persistent Pollutants<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">CO\u2082 and CFCs remain in the atmosphere for long periods.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Warming<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Causes rising temperatures and environmental impacts.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Cooling<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Opposite of global warming according to the discussion.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Albedo Effect<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Reflection of sunlight contributes to cooling.<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Aerosols<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Discussed in relation to global cooling.<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Electromagnetic Radiation: Important Sequence for UGC NET<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">Towards the end of the session, the discussion introduces the <\/span><\/i><b><i>electromagnetic spectrum<\/i><\/b><i><span style=\"font-weight: 400\">, which is another important topic from the People, Development and Environment (PDE) unit.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the session, aspirants should remember the following sequence of electromagnetic radiations:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Gamma Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">X-Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ultraviolet Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Visible Light<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Infrared Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Microwaves<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Radio Waves<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker emphasizes remembering this order because questions based on the sequence, wavelength, and frequency have appeared in competitive examinations.<\/span><\/i><\/p>\n<h2><b><i>Memory Trick for Electromagnetic Spectrum<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">To simplify memorization, the session provides the following trick:<\/span><\/i><\/p>\n<p><b><i>GXUVIMR<\/i><\/b><\/p>\n<p><i><span style=\"font-weight: 400\">Where:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><b><i>G<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Gamma Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>X<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 X-Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>UV<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Ultraviolet Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>V<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Visible Light<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>I<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Infrared Rays<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>M<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Microwaves<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>R<\/i><\/b><i><span style=\"font-weight: 400\"> \u2013 Radio Waves<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the discussion, this mnemonic helps students quickly recall the correct sequence during the examination.<\/span><\/i><\/p>\n<p><a href=\"https:\/\/www.flipkart.com\/ugc-net-general-paper-1-hand-written-book-jrfadda-notes-aditi-ma-m\/p\/itm494f814128b46\" target=\"_blank\" rel=\"noopener nofollow\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14809 size-large\" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-1024x341.webp\" alt=\"JRF Adda Book\" width=\"1024\" height=\"341\" srcset=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-1024x341.webp 1024w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-300x100.webp 300w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-768x256.webp 768w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-900x300.webp 900w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-620x207.webp 620w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2-400x133.webp 400w, https:\/\/www.jrfadda.com\/exams\/wp-content\/uploads\/2025\/06\/book-banner-2.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<h2><b><i>Electromagnetic Spectrum Sequence<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Memory Trick<\/i><\/b><\/td>\n<td><b><i>Radiation<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">G<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Gamma Rays<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">X<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">X-Rays<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Ultraviolet Rays<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">V<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Visible Light<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">I<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Infrared Rays<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">M<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Microwaves<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">R<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Radio Waves<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Wavelength vs Frequency Trick<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The session also explains the relationship between <\/span><\/i><b><i>wavelength<\/i><\/b><i><span style=\"font-weight: 400\"> and <\/span><\/i><b><i>frequency<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the discussion:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">As <\/span><\/i><b><i>frequency increases<\/i><\/b><i><span style=\"font-weight: 400\">, wavelength decreases.<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">As <\/span><\/i><b><i>wavelength increases<\/i><\/b><i><span style=\"font-weight: 400\">, frequency decreases.<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">The speaker advises students to remember that these two properties are <\/span><\/i><b><i>inversely related<\/i><\/b><i><span style=\"font-weight: 400\">, making it easier to solve sequence-based questions in UGC NET Paper 1.<\/span><\/i><\/p>\n<h2><b><i>Increasing Order of Wavelength<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">Based on the sequence discussed in the session, the increasing order of wavelength is:<\/span><\/i><\/p>\n<p><b><i>Gamma Rays \u2192 X-Rays \u2192 Ultraviolet Rays \u2192 Visible Light \u2192 Infrared Rays \u2192 Microwaves \u2192 Radio Waves<\/i><\/b><\/p>\n<p><i><span style=\"font-weight: 400\">According to the discussion, Gamma Rays have the shortest wavelength, while Radio Waves have the longest.<\/span><\/i><\/p>\n<h2><b><i>Increasing Order of Frequency<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The session explains that because wavelength and frequency are inversely proportional, the increasing order of frequency is the reverse of wavelength.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Thus, according to the discussion:<\/span><\/i><\/p>\n<p><b><i>Radio Waves \u2192 Microwaves \u2192 Infrared Rays \u2192 Visible Light \u2192 Ultraviolet Rays \u2192 X-Rays \u2192 Gamma Rays<\/i><\/b><\/p>\n<p><i><span style=\"font-weight: 400\">Students are encouraged to use the <\/span><\/i><b><i>GXUVIMR<\/i><\/b><i><span style=\"font-weight: 400\"> trick to answer such questions quickly.<\/span><\/i><\/p>\n<h2><b><i>PYQ-Based Concept Discussed in the Session<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The speaker demonstrates how sequence-based questions can be solved using the mnemonic.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">An example discussed in the session asks candidates to identify the <\/span><\/i><b><i>correct increasing order of wavelength<\/i><\/b><i><span style=\"font-weight: 400\">.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">Using the <\/span><\/i><b><i>GXUVIMR<\/i><\/b><i><span style=\"font-weight: 400\"> sequence, aspirants can arrange the radiations correctly without memorizing numerical values.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">According to the speaker, understanding the sequence is more important than remembering exact wavelength values for objective-type questions.<\/span><\/i><\/p>\n<h2><b><i>Important Exam Tricks<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The discussion summarizes several quick revision points for UGC NET aspirants.<\/span><\/i><\/p>\n<h3><b><i>Trick 1: Atmospheric Layers<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">Remember the order:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Troposphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Stratosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Mesosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Thermosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Exosphere<\/span><\/i><\/li>\n<\/ul>\n<h3><b><i>Trick 2: Good vs Bad Ozone<\/i><\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400\"><b><i>Good Ozone<\/i><\/b><i><span style=\"font-weight: 400\"> \u2192 Stratosphere<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><b><i>Bad Ozone<\/i><\/b><i><span style=\"font-weight: 400\"> \u2192 Troposphere<\/span><\/i><\/li>\n<\/ul>\n<h3><b><i>Trick 3: UV Rays<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">Remember the three ultraviolet rays:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">UV-A<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">UV-B<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">UV-C<\/span><\/i><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400\">According to the discussion, the stratospheric ozone layer protects the Earth from harmful ultraviolet radiation.<\/span><\/i><\/p>\n<h3><b><i>Trick 4: Greenhouse Gases<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">The greenhouse gases discussed in the session are:<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Carbon Dioxide (CO\u2082)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Methane (CH\u2084)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Chlorofluorocarbons (CFCs)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Ozone (O\u2083)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Nitrous Oxide (N\u2082O)<\/span><\/i><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><i><span style=\"font-weight: 400\">Water Vapour<\/span><\/i><\/li>\n<\/ul>\n<h3><b><i>Trick 5: Global Warming vs Global Cooling<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">According to the discussion:<\/span><\/i><\/p>\n<table>\n<tbody>\n<tr>\n<td><b><i>Global Warming<\/i><\/b><\/td>\n<td><b><i>Global Cooling<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Increase in Earth&#8217;s temperature<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Decrease in Earth&#8217;s temperature<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Associated with greenhouse gases<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with Albedo and aerosols discussed in the session<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b><i>Trick 6: Electromagnetic Spectrum<\/i><\/b><\/h3>\n<p><i><span style=\"font-weight: 400\">Remember:<\/span><\/i><\/p>\n<p><b><i>GXUVIMR<\/i><\/b><\/p>\n<p><i><span style=\"font-weight: 400\">This single mnemonic helps solve several sequence-based questions.<\/span><\/i><\/p>\n<h2><b><i>Last-Minute Revision Table<\/i><\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b><i>Topic<\/i><\/b><\/td>\n<td><b><i>Quick Revision<\/i><\/b><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Atmospheric Layers<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Troposphere \u2192 Stratosphere \u2192 Mesosphere \u2192 Thermosphere \u2192 Exosphere<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Good Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in Stratosphere<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Bad Ozone<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Present in Troposphere<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">UV Rays<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">UV-A, UV-B, UV-C<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Greenhouse Gases<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">CO\u2082, CH\u2084, CFCs, O\u2083, N\u2082O, Water Vapour<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Ozone Hole<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Mentioned over Antarctica<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Warming<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Increase in Earth&#8217;s temperature<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Global Cooling<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Opposite of global warming according to the discussion<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Albedo<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">Associated with cooling<\/span><\/i><\/td>\n<\/tr>\n<tr>\n<td><i><span style=\"font-weight: 400\">Electromagnetic Spectrum<\/span><\/i><\/td>\n<td><i><span style=\"font-weight: 400\">GXUVIMR<\/span><\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b><i>Conclusion<\/i><\/b><\/h2>\n<p><i><span style=\"font-weight: 400\">The session provides a comprehensive explanation of <\/span><\/i><b><i>Global Warming<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>Greenhouse Gases (GHGs)<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>Good and Bad Ozone<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>UV Rays<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>Ozone Hole<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>Global Cooling<\/i><\/b><i><span style=\"font-weight: 400\">, <\/span><\/i><b><i>Albedo<\/i><\/b><i><span style=\"font-weight: 400\">, and the <\/span><\/i><b><i>Electromagnetic Spectrum<\/i><\/b><i><span style=\"font-weight: 400\"> from an examination perspective. Rather than relying only on definitions, the discussion uses simple examples, memory tricks, and concept-based explanations to make the topics easier to understand.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400\">For UGC NET Paper 1 aspirants, mastering these concepts can help answer both factual and conceptual questions from the <\/span><\/i><b><i>People, Development and Environment (PDE)<\/i><\/b><i><span style=\"font-weight: 400\"> unit. Regular revision of the tricks, tables, and sequences discussed in the session can strengthen preparation for future examinations.<\/span><\/i><\/p>\n<p>&nbsp;<\/p>\n<h2><b><i>UGC NET Paper 1 PDE Global Warming and Greenhouse Gases FAQs<\/i><\/b><\/h2>\n<style>#sp-ea-30715 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-30715{ position: relative; }#sp-ea-30715 .ea-card{ opacity: 0;}#eap-preloader-30715{ position: absolute; left: 0; top: 0; height: 100%;width: 100%; text-align: center;display: flex; align-items: center;justify-content: center;}#sp-ea-30715.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-30715.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-30715.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-30715.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-30715.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}<\/style><div id=\"sp_easy_accordion-1785125047\"><div id=\"sp-ea-30715\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"1\" data-scroll-active-item=\"1\" data-offset-to-scroll=\"0\"><div id=\"eap-preloader-30715\" class=\"accordion-preloader\"><img decoding=\"async\" src=\"https:\/\/www.jrfadda.com\/exams\/wp-content\/plugins\/easy-accordion-free\/public\/assets\/ea_loader.svg\" alt=\"Loader image\"\/><\/div><div class=\"ea-card ea-expand sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-307150\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse307150\" aria-controls=\"collapse307150\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> Why is Global Warming important for UGC NET Paper 1?<\/a><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse307150\" data-parent=\"#sp-ea-30715\" role=\"region\" aria-labelledby=\"ea-header-307150\"> <div class=\"ea-body\"><p><i><span style=\"font-weight: 400\">According to the session, Global Warming is an important topic from the <\/span><\/i><b><i>People, Development and Environment (PDE)<\/i><\/b><i><span style=\"font-weight: 400\"> unit and has appeared in previous UGC NET examinations.<\/span><\/i><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-307151\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse307151\" aria-controls=\"collapse307151\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Which greenhouse gases are discussed in the session?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse307151\" data-parent=\"#sp-ea-30715\" role=\"region\" aria-labelledby=\"ea-header-307151\"> <div class=\"ea-body\"><p><i><span style=\"font-weight: 400\">The discussion mentions Carbon Dioxide, Methane, Chlorofluorocarbons, Ozone, Nitrous Oxide, and Water Vapour as greenhouse gases.<\/span><\/i><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-307152\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse307152\" aria-controls=\"collapse307152\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What is the difference between Good Ozone and Bad Ozone?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse307152\" data-parent=\"#sp-ea-30715\" role=\"region\" aria-labelledby=\"ea-header-307152\"> <div class=\"ea-body\"><p><i><span style=\"font-weight: 400\">According to the session, Good Ozone is present in the <\/span><\/i><b><i>Stratosphere<\/i><\/b><i><span style=\"font-weight: 400\"> and protects the Earth from harmful UV rays, whereas Bad Ozone is present in the <\/span><\/i><b><i>Troposphere<\/i><\/b><i><span style=\"font-weight: 400\"> and is associated with pollution.<\/span><\/i><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-307153\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse307153\" aria-controls=\"collapse307153\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What is the GXUVIMR trick?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse307153\" data-parent=\"#sp-ea-30715\" role=\"region\" aria-labelledby=\"ea-header-307153\"> <div class=\"ea-body\"><p><i><span style=\"font-weight: 400\">GXUVIMR is the mnemonic discussed in the session to remember the sequence of the electromagnetic spectrum:<\/span><\/i><\/p><p><i><span style=\"font-weight: 400\">Gamma \u2192 X-Rays \u2192 Ultraviolet \u2192 Visible \u2192 Infrared \u2192 Microwaves \u2192 Radio Waves.<\/span><\/i><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-307154\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse307154\" aria-controls=\"collapse307154\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What is the relationship between wavelength and frequency?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse307154\" data-parent=\"#sp-ea-30715\" role=\"region\" aria-labelledby=\"ea-header-307154\"> <div class=\"ea-body\"><p><i><span style=\"font-weight: 400\">According to the discussion, wavelength and frequency are inversely proportional. As one increases, the other decreases.<\/span><\/i><\/p><\/div><\/div><\/div><script type=\"application\/ld+json\">{ \"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"@id\": \"sp-ea-schema-30715-6a66f382257a9\", \"mainEntity\": [{ \"@type\": \"Question\", \"name\": \"Why is Global Warming important for UGC NET Paper 1?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"<i>According to the session, Global Warming is an important topic from the<\/i><b><i>People, Development and Environment (PDE)<\/i><\/b><i>unit and has appeared in previous UGC NET examinations.<\/i>\" } },{ \"@type\": \"Question\", \"name\": \"Which greenhouse gases are discussed in the session?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"<i>The discussion mentions Carbon Dioxide, Methane, Chlorofluorocarbons, Ozone, Nitrous Oxide, and Water Vapour as greenhouse gases.<\/i>\" } },{ \"@type\": \"Question\", \"name\": \"What is the difference between Good Ozone and Bad Ozone?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"<i>According to the session, Good Ozone is present in the<\/i><b><i>Stratosphere<\/i><\/b><i>and protects the Earth from harmful UV rays, whereas Bad Ozone is present in the<\/i><b><i>Troposphere<\/i><\/b><i>and is associated with pollution.<\/i>\" } },{ \"@type\": \"Question\", \"name\": \"What is the GXUVIMR trick?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"<i>GXUVIMR is the mnemonic discussed in the session to remember the sequence of the electromagnetic spectrum:<\/i><i>Gamma \u2192 X-Rays \u2192 Ultraviolet \u2192 Visible \u2192 Infrared \u2192 Microwaves \u2192 Radio Waves.<\/i>\" } },{ \"@type\": \"Question\", \"name\": \"What is the relationship between wavelength and frequency?\", \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"<i>According to the discussion, wavelength and frequency are inversely proportional. As one increases, the other decreases.<\/i>\" } }] }<\/script><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Global Warming and Greenhouse Gases (GHGs) are among the most important topics in the People, Development and Environment (PDE) unit of UGC NET Paper 1. According to the session, questions from this topic have appeared in previous UGC NET examinations, making it an important area for aspirants preparing for upcoming attempts. The discussion explains the [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":30714,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[1923,1924,1922],"class_list":["post-30711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ugc-net","tag-global-warming","tag-greenhouse-gases","tag-ugc-net-paper-1-pde","entry","has-media"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/posts\/30711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/comments?post=30711"}],"version-history":[{"count":3,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/posts\/30711\/revisions"}],"predecessor-version":[{"id":30716,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/posts\/30711\/revisions\/30716"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/media\/30714"}],"wp:attachment":[{"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/media?parent=30711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/categories?post=30711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jrfadda.com\/exams\/wp-json\/wp\/v2\/tags?post=30711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}