What is a dam? Why do we seek to build large dams? While building large dams, which three main problems should particulary be addressed to maintain peace among local people? Mention them.
A dam is a barrier constructed to hold back water and raise its level forming a reservoir used to generator electricity or as a water supply. Large dams are built in order to generate electricity from water supply.
The dams can be constructed only in a limited number of place preferably in hilly terrains. Large areas of agricultural land and human habitation are to be sacrificed as they get submerged. Large ecosystems are destroyed when submerged under the water in dams. The vegetation large amounts of methane which is also a green-house gas. It created the problem of satisfactory rehabilitation of displaced people.