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01/11/2021 11:21 am
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Sewage drained into water bodies kill fishes because
(1) it removes the food eaten by fish
(2) excessive carbon dioxide is added to water
(3) it increases competition with fishes for dissolved oxygen
(4) it gives off a bad smell
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01/11/2021 11:24 am
Correct answer: (3) it increases competition with fishes for dissolved oxygen