UPSC Civil Services 2018 Prelims General Studies Paper I

● The Aral Sea, in Central Asia, used to be the fourth largest lake in the world, after the Caspian Sea, and Lakes Superior and Victori(a) Now barely 10% of it is left. BBC-2014.
● Lake Baikal's has been crippled by a series of detrimental phenomena.... They include the disappearance of the omul fish, rapid growth of putrid algae and the death of endemic species of sponges across its vast 3.2 million-hectare are(a) [TheHindu 2017-Oct], but there is no mention of immensely drying up. Hence answer A: 1 only.