our natrual resources

Name the six types of soil.

_________are built across a river to hold back the flow of water from rivers.

Our main source of fresh water is?

which dam is built on the river Satluj in Himachal Pradesh

-------------Is the top layer of the earths surface

what type of water do we use?

In a dam water is made to fall from a height to generate electricity. What is it called?

challens that are dug in the ground to take water from the rivers to the fields are called?