Neural Control and CoordinationHard
Question
The diagram show changes in the concentration of two substances A and B in the water of a river polluted by sewage, what are substance A and B?
Options
A.A - Decomposer
B - DO
B - DO
B.A - BOD
B - Decomposer
B - Decomposer
C.A - Fishes
B - BOD
B - BOD
D.A - DO
B - Fishes
B - Fishes
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