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प्रश्न
Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of ______.
पर्याय
Large number of mosquitoes.
Increase in the amount of dissolved oxygen.
Decrease in the amount of dissolved oxygen in water.
Clogging of gills by mud.
MCQ
रिकाम्या जागा भरा
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उत्तर
Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of decrease in the amount of dissolved oxygen in water.
Explanation:
Organic waste consumes oxygen and therefore, dissolved oxygen in water decreases and fish in such polluted water die.
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