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June, Dec 2016, Jan, Nov 2017 MCQs with Related Notes (in Hindi)
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mam in previous lesson u said water pollution is due to agriculture waste
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Somya surana
6 months ago
i am also having the same query
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Somya surana
6 months ago
among agricultural run off and untreated sewage which one is the largest source of water pollution in rivers?
Agar India ki baat kare to Sewage sabse jyada responsible hooga water pollution k liye. ye question multiple times aa chuka ahi and hamesha yahi vaala correct answer raha hai. so don't confuse.
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Somya surana
5 months ago
ok