If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Options: A . &nbspDegradation B . &nbspActive decomposition C . &nbspRecovery D . &nbspCleaner water

If D.O. concentration falls down to zero in any natural drainage, it indicates t

Question

If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of

Options:

A . Degradation

B . Active decomposition

C . Recovery

D . Cleaner water

Answer: Option B

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