Blob was in a _________ form.

Important fishing centr of the world

The gaseous mass enveloping the earth is known as the

____________ is formed by numerous biomes .

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

The portion from crust to mantle is generally referred to as

Algae spread over coral reefs that have undergone_______________ and they cause destruction of the reefs.

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

___________ is a combination of all ecosystems.

The inorganic part of the earth is called