Question

Q.20 Give the advantages of constructing big dams across the river. How does
construction of dam across the river get linked with production of green house
gases.
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Answer 1

Answer:

Explanation:

(1 )Large areas of agricultural lands and human population get submerged.

(2) Problem of rehabilitation of displaced people.

The vegetation which is submerged, rots under anaerobic condition, and gives out a large amount of methane which is a green house gas.