1.

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

Answer»

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

Solution :ORGANIC waste consumes oxygen .As a result , the dissolved oxygen in water decreases and fish in such water die


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