ICSE Class 7 Answered

Two advantages of hydel Power: It does not cause pollution and it produces a number of benefits, such as flood control, irrigation, and water supply.

Two disadvantages: For building large dams for producing hydro-electricity, forests are cut on a large scale and tribal and village communities are displaced from their land and villages. Dams may cause floods because of sedimentation. In case of excessive rainfall, the release of water from dams often floods the area, causing damage to lives and property.