Question

explain social problems, economical problems, environmental problems, of construction of dams . ​

Answer 1

Social problems:

1. Disturbs settlements, land, etc nearby

Economical problems

2. Expensive, and sometimes does not return the value equivalent to its expense.

Environmental problems:

3. Disturbs the flow of water of rivers into the streams.

4. It's heavy, so it may be a cause of earthquakes at some soft places.