List two main causes of the pollution of water of the river Ganga. State how pollution and contamination of river water prove harmful for the health of the people of neighbouring areas.
The pollution of water of River Ganga is caused by the dumping of untreated sewage and industrial wastes into it.
Effects of pollution and contamination of river water:-
(a) The contamination of river water leads to the growth of disease-causing microorganisms.
(b) The river water also becomes more acidic because of the discharge of chemical effluents by the industries which makes the soil acidic and affects the productivity of crops.
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