The response of organism to the cycles of day and night is known as

The area reserved for the welfare of wild animal is called

Chipko movement was led by

A type of animal that no longer exists on the earth is said

A ___________ shows who eats what in nature.

In which of the following categories,human beings are included?

Which animal has recently become extinct?

Deforestation causes by

What is called  ground water level?

The presence of water vapour in the air is called