High biological oxygen demand indicates: Options: A . &nbspabsence of microbial pollution B . &nbspmoderate microbial pollution C . &nbspintense level of microbial pollution D . &nbspall of these

High biological oxygen demand indicates:

Question

High biological oxygen demand indicates:

Options:

A . absence of microbial pollution

B . moderate microbial pollution

C . intense level of microbial pollution

D . all of these

Answer: Option C

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