The portion from crust to mantle is generally referred to as

All organisms of the _______________ build their bodies using the elements present in the earth's crust.

The fog created due to smoke is called

____________ is formed by numerous biomes .

The inorganic part of the earth is called

Which  term  is often used to refer  the densest parts of the earth?

The gaseous mass enveloping the earth is known as the

Increasing population and urbanisation is one of the main reason for _________ pollution.

____________ includes all the water found on the surface of the earth.

Important fishing centr of the world