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Fish die in water bodies polluted by sewage due to

Fish die in water bodies polluted by sewage due to

Options

(a) pathogens
(b) Clogging of gills
(c) Decreases in D.O
(d) Foul smell

Correct Answer:

Decreases in D.O

Explanation:

Microorganisms from sewage consume all dissolved oxygen and fish get deprived of this oxygen and ultimately die.

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