Acid rain mainly contains  nitric acids and:

Which is used to produce energy?

The natural resource which is made up of  stones, sand, clay, dead plants  and animals matters is:

What is water fit for drinking called?

What percentage of water on the earth is fresh?

Why is natural resources been used indiscriminately?

Which is a fossil fuel?

Exhaustible resources are present in:

A non-renewable source of energy is:

Exhaustible resources are classified into: