State the main uses of mountains.

The main uses of mountains are:

1. Mountains are effective climatic barriers.
2. The swift streams of mountains are frequently sources of hydro-electric power.
3. They have deposits of minerals. They provide gold, silver, copper, lead etc.
4. They provide scope for lumbering industries.
5. Agriculture has been developed on the slopes of mountains.
6. They provide pastures.
7. They act as natural barriers or borders between two countries.