1.

Mention any two advantages and two disadvantages of producing hydroelectricity by building dams on rivers.

Answer»

Solution :Advantages:
(i) The generation of ELECTRICITY from water does not produce any environmental pollution.
(ii) Water energy is a renewable sources of electric energy which will never get exhausted.
Disadvantages:
Disadvantages:
(i) A vast VARIETY of FLORA and FAUNA ( plants and animals ) get affected .
(ii) Dams can be CONSTRUED only at a limited number of places.


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