A large number of fish suddenly die in a lake | vedclass

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Question

(C) The excessive use of fertilizers like urea and phosphate in nearby fields leads to nutrient enrichment in the water body,a process known as Eutrop

Vedclass · Accepted Answer

$a$ and $c$

Vedclass · Answer

(C) The excessive use of fertilizers like urea and phosphate in nearby fields leads to nutrient enrichment in the water body,a process known as Eutrophication.This causes an algal bloom,which makes the water appear green and murky (statement $c$).As the algae die,their decomposition by microorganisms consumes a large amount of dissolved oxygen,leading to the death of fish due to hypoxia.Therefore,the combination of nutrient runoff (statement $a$) and the resulting algal bloom/murky water (statement $c$) is the most direct cause of the fish kill.Thus,the correct option is $a$ and $c$.

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