Typhoid,Cholera and such diseases are caused by:
air pollution
water pollution
soil pollution
None of these
As we learnt
Harmful effect of water pollution -
Pathogens causing diseases like typhoid, dysentery, diarrhoeal, cholera, etc.
Death of aquatic animals
Imbalance Ecosystem.
- wherein
Due to depletion of oxygen
The diseases are caused by polluted water.
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