{"id":91192,"date":"2025-06-01T10:48:55","date_gmt":"2025-06-01T10:48:55","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91192"},"modified":"2025-06-01T10:48:55","modified_gmt":"2025-06-01T10:48:55","slug":"the-scientific-view-is-that-the-increase-in-global-temperature-should","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/","title":{"rendered":"The scientific view is that the increase in global temperature should"},"content":{"rendered":"<p>The scientific view is that the increase in global temperature should not exceed 2\u00b0C above pre-industrial level. If the global temperature increases beyond 3\u00b0C above the pre-industrial level, what can be its possible impact\/impacts on the world?<\/p>\n<ul>\n<li>1. Terrestrial biosphere tends toward a net carbon source.<\/li>\n<li>2. Widespread coral mortality will occur.<\/li>\n<li>3. All the global wetlands will permanently disappear.<\/li>\n<li>4. Cultivation of cereals will not be possible anywhere in the world.<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below.<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 2 only&#8221; option3=&#8221;2, 3 and 4 only&#8221; option4=&#8221;1, 2, 3 and 4&#8243; correct=&#8221;option2&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2014<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2014.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2014\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nBased on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nThe question assesses understanding of the projected impacts of significant global warming based on climate science.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nA 3\u00b0C warming scenario is associated with severe impacts. Terrestrial ecosystems (like forests and soils) can shift from absorbing CO2 to releasing it (net source) due to factors like increased respiration, droughts, and wildfires (Statement 1). Coral reefs are highly vulnerable to thermal stress; exceeding 1.5\u00b0C is critical, and a 3\u00b0C increase would cause near-total loss and widespread mortality (Statement 2). While climate change will impact wetlands and agriculture significantly, the complete and permanent disappearance of ALL global wetlands (Statement 3) and impossibility of cereal cultivation ANYWHERE (Statement 4) are considered overly pessimistic and not certain outcomes even at 3\u00b0C warming. Some adaptation, resilience, or regional variations are expected.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>The scientific view is that the increase in global temperature should not exceed 2\u00b0C above pre-industrial level. If the global temperature increases beyond 3\u00b0C above the pre-industrial level, what can be its possible impact\/impacts on the world? 1. Terrestrial biosphere tends toward a net carbon source. 2. Widespread coral mortality will occur. 3. All the &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"The scientific view is that the increase in global temperature should\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/#more-91192\">Detailed Solution<span class=\"screen-reader-text\">The scientific view is that the increase in global temperature should<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1092],"tags":[1468,1136,1259],"class_list":["post-91192","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1468","tag-environment-and-ecology","tag-greenhouse-effect-and-climate-change","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The scientific view is that the increase in global temperature should<\/title>\n<meta name=\"description\" content=\"Based on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding. The question assesses understanding of the projected impacts of significant global warming based on climate science.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The scientific view is that the increase in global temperature should\" \/>\n<meta property=\"og:description\" content=\"Based on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding. The question assesses understanding of the projected impacts of significant global warming based on climate science.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:48:55+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The scientific view is that the increase in global temperature should","description":"Based on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding. The question assesses understanding of the projected impacts of significant global warming based on climate science.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/","og_locale":"en_US","og_type":"article","og_title":"The scientific view is that the increase in global temperature should","og_description":"Based on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding. The question assesses understanding of the projected impacts of significant global warming based on climate science.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:48:55+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-scientific-view-is-that-the-increase-in-global-temperature-should\/","name":"The scientific view is that the increase in global temperature should","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:48:55+00:00","dateModified":"2025-06-01T10:48:55+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Based on scientific projections, a global temperature increase beyond 3\u00b0C above pre-industrial levels would likely lead to the terrestrial biosphere becoming a net carbon source and widespread coral mortality. Statements 3 and 4 are considered too extreme and unlikely to be certain outcomes at this temperature increase level according to current scientific understanding. 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