Question

What is a dam ? Write one advantage and one disadvantage of big dams

Answer 1

a barrier constructed to hold back the water and store water in rivers.its disadvantage is that it displaces some villages nearby.

Answer 2

Explanation:

Dams are just use to control water.

Dams is like barrier to control the flow of water.

Advantages :-

1) Produces hydroelectricity

2) Water supply to village people

3) irrigation