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The domestic sewage in large cities...

The domestic sewage in large cities

A

When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen

B

has very high amounts of suspended solids and dissolved salts.

C

hasd a high BOD as it contains both aerobic and anaerobic bacteria

D

Is processed by aerobic and then anaerobic and anaerobic bacteria.

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
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  14. Which one of the following is not used for exsituplant conservation ?

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