Multiple choice general knowledge

Eutrophication of water bodies resulting to killing of fishes is mainly due to

  1. Non-availability of food

  2. Non-availability of light

  3. Non-availability of oxygen

  4. Non-availability of essential minerals
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Eutrophication is caused by excess nutrients (nitrogen, phosphorus) entering water bodies, leading to algal blooms. When algae die and decompose, oxygen is consumed, creating hypoxic or anoxic conditions. Fish die from oxygen deprivation, not from lack of food, light, or minerals.

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