What is the zone where fish life might tend to progressively dwindle when waste water, is discharged into a river, called ?

What is the zone where fish life might tend to progressively dwindle w

1.	What is the zone where fish life might tend to progressively dwindle when waste water, is discharged into a river, called ?
A.	zone of degradation
B.	zone of active decomporsition
C.	zone of mixing
D.	zone of recovery
Answer» C. zone of mixing

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What is the zone where fish life might tend to progressively dwindle when waste water, is discharged into a river, called ?

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