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The amount of dissolved oxygen in water may decrease because of the


decrease in density of water


increase in plants in the water


decrease in temperature of water


increase in organic matter in the water

Verified Answer :

syed514

I think , The amount of dissolved oxygen in water may decrease because of the increase in organic matter in the water.

Answer:

Option D

Explanation:

Increase in organic matter in the water will lead to production of microbes, algae, and all other  water species  by feeding  on increased organic matter. This organic matter will act as  food for the species living under the water.

With increased food supply, the population of water species will also increase which in turn will consume more and more dissolved oxygen from water thereby making it devoid of oxygen.

Hence, option D is correct

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