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Who utilizes the maximum amount of oxygen in the upstream of sewage discharge?

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in Biology – Class 12 by (271k points)
Who utilizes the maximum amount of oxygen in the upstream of sewage discharge?

(a) Animals

(b) Microorganisms

(c) Humans

(d) Plants

I got this question during an online interview.

The question is from Environmental Issues in division Environmental Issues of Biology – Class 12

1 Answer

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Best answer
Correct choice is (b) Microorganisms

For explanation I would say: In the upstream of sewage water, the maximum oxygen is used by the microorganisms. Due to this, there is less oxygen availability in the downstream that is rivers, ponds, or the other water bodies where the fully processed wastewater is released.

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