What happens when the maximum amount of oxygen in the upstream of sewage discharge is utilized by microbes?(a) Natality of aquatic plants(b) Natality of aquatic fishes(c) Mortality of aquatic creatures(d) Mortality of bacteriaI have been asked this question during an interview.My question is based upon Environmental Issues topic in portion Environmental Issues of Biology – Class 12

What happens when the maximum amount of oxygen in the upstream of sewa

1.	What happens when the maximum amount of oxygen in the upstream of sewage discharge is utilized by microbes?(a) Natality of aquatic plants(b) Natality of aquatic fishes(c) Mortality of aquatic creatures(d) Mortality of bacteriaI have been asked this question during an interview.My question is based upon Environmental Issues topic in portion Environmental Issues of Biology – Class 12
Answer» The correct option is (c) MORTALITY of aquatic creatures Easy explanation: When the maximum amount of oxygen in the upstream of sewage DISCHARGE is utilized by MICROBES, there is less oxygen availability in the downstream that is rivers, PONDS, or the other water bodies. DUE to this, the aquatic organisms living in that respective ecosystem die due to a deficiency of oxygen.

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