Replenishment of dissolved oxygen in water stream polluted with indust – McqOptions

MCQOPTIONS

1.	Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
A.	natural aeration of water stream.
B.	photosynthetic action of algae.
C.	both (a) & (b).
D.	neither (a) nor (b).
Answer» D. neither (a) nor (b).

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