Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
A
Food
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B
Light
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C
Essential minerals
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D
Oxygen
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Solution
The correct option is D Oxygen
Eutrophication is the excessive growth of algae, plants and animals in water bodies due to the nutrient enrichment, particularly with nitrogen and phosphate. There is a drastic decrease in oxygen replenishment inside water. Non-availability of oxygen results in the death of aquatic animals.