What is the effect of an algal bloom in a lak | vedclass

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(D) An algal bloom occurs due to the excessive growth of algae caused by nutrient enrichment (eutrophication). $1$. As these algae die,their decomposi

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All of these

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(D) An algal bloom occurs due to the excessive growth of algae caused by nutrient enrichment (eutrophication). $1$. As these algae die,their decomposition by microorganisms consumes a large amount of dissolved oxygen in the water. $2$. This leads to severe oxygen depletion in the lake. $3$. The lack of oxygen (hypoxia) results in the death of aquatic organisms,including fishes. $4$. Additionally,the decomposition process releases $CO_2$. Therefore,all the given statements are correct.

What is the effect of an algal bloom in a lake?

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