{"id":33114,"date":"2024-03-08T10:01:32","date_gmt":"2024-03-08T10:01:32","guid":{"rendered":"https:\/\/edukemy.com\/blog\/?p=33114"},"modified":"2024-03-08T10:01:35","modified_gmt":"2024-03-08T10:01:35","slug":"upsc-prelims-2018-question-13","status":"publish","type":"post","link":"https:\/\/edukemy.com\/blog\/upsc-prelims-2018-question-13\/","title":{"rendered":"UPSC Prelims 2018 &#8211; Question 13"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-prelims-test-series?utm_source=Blog&amp;utm_medium=Blog&amp;utm_campaign=Blog-%20PTS\" target=\"_blank\" rel=\"noreferrer noopener\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/02\/Prelims-Test-Series-eng-and-hindi-1280\u00d7330.svg\" alt=\"UPSC Prelims Mock Test - ECONOMY 2\" class=\"wp-image-24924\" width=\"779\" height=\"199\"\/><\/a><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a534c1a92f1c\" class=\"ez-toc-cssicon-toggle-label\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a534c1a92f1c\"  \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/edukemy.com\/blog\/upsc-prelims-2018-question-13\/#Q13_Which_of_the_following_hashave_shrunk_immenselydried_up_the_recent_past_due_to_human_activities\" >Q13. Which of the following has\/have shrunk immensely\/dried up the recent past due to human activities?<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Q13_Which_of_the_following_hashave_shrunk_immenselydried_up_the_recent_past_due_to_human_activities\"><\/span>Q13. Which of the following has\/have shrunk immensely\/dried up the recent past due to human activities?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Aral Sea<\/li><li>Black Sea<\/li><li>Lake Baikal<\/li><\/ol>\n\n\n\n<p>Select the correct answer using the code given below:<br>(a) 1 only<br>(b) 2 and 3 only<br>(c) 2 only<br>(d) 1 and 3 only<\/p>\n\n\n\n<p>Answer: A<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Aral Sea: <\/strong>The Aral Sea is a saline lake located in Central Asia that was once the world\u2019s fourth largest Salt Lake. In the 1960s the Aral Sea, which was the drainage basin for Kyrgyzstan, Turkmenistan, Tajikistan, Uzbekistan, Pakistan, Afghanistan, and<br>Kazakhstan, began to shrink as the Soviet Union began to divert water for agricultural purposes. The Aral Sea, which was once 26,300 square miles in size had decreased in size by 2007 to only 10% of its original area. <\/li><li><strong>Black Sea: <\/strong>Past 60 years, the oxygen-rich top layer of the Black Sea decreased from 140 meters to 90 meters deep, which amounts to an over 40 percent dip in habitable waters. Two existing causes behind the shrinkage: an abundance of nutrients, particularly algae that led to great consumption of oxygen and global warming. The Black Sea has lost more then a third of its habitable volume. The habitable area in Black Sea is shrinking, but the actual volume is not shrinking immensely.<\/li><li><strong>Lake Baikal: <\/strong>In 2015, Russia officially declared Lake Baikal an emergency zone because of a catastrophic drop in its water<br>level. Baikal is the globe\u2019s largest freshwater lake and is on the UNESCO World Heritage list. Lake Baikal hasn\u2019t shrunk immensely yet. Certainly, its water is shrinking. But, it\u2019s not \u2018immense\u2019 like Aral Sea. If one has to go for two options, the intensity of shrinkage should be either equal or comparable. Case of Aral Sea is extreme and Lake Baikal\u2019s present condition, which is better, is no comparison to Aral Sea\u2019s fate<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/edukemy.com\/free-resources-for-upsc?utm_source=Blog&amp;utm_medium=Banner&amp;utm_campaign=Resources\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"1280\" height=\"300\" data-src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18.png\" alt=\"\" class=\"wp-image-42398 lazyload\" data-srcset=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18.png 1280w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18-1170x274.png 1170w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18-585x137.png 585w\" data-sizes=\"(max-width: 1280px) 100vw, 1280px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1280px; --smush-placeholder-aspect-ratio: 1280\/300;\" \/><\/a><\/figure>\n\n\n\n<p>For UPSC Prelims Resources,&nbsp;<a href=\"https:\/\/edukemy.com\/upsc-cse-prelims-resource-centre\" target=\"_blank\" rel=\"noreferrer noopener\">Click here<\/a><\/p>\n\n\n\n<p>For Daily Updates and Study Material:<\/p>\n\n\n\n<p>Join our Telegram Channel \u2013&nbsp;<a href=\"https:\/\/t.me\/WithEdukemy4IAS\" target=\"_blank\" rel=\"noreferrer noopener\">Edukemy for IAS<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>1. 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Which of the following has\/have shrunk immensely\/dried up the recent past due to human activities?<\/p>\n<p>Aral Sea<\/p>\n<p>Black Sea<\/p>\n<p>Lake Baikal<\/p>\n","protected":false},"author":17,"featured_media":33115,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1644],"tags":[232,515,231],"class_list":["post-33114","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-upsc-prelims","tag-upsc","tag-upsc-cse","tag-upsc-prelims"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Q13. 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