_______ is the primary source of energy.

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

Deforestation causes by

Chipko movement is concerned with

In which year national wildlife protection act was passed?

Write a simple food chain using the following organisms-snake,grass,frog,grass hopper

Acid rain is caused by

A ___________ shows who eats what in nature.

___________ provides shelter to animals  such as rabbits, ants, earthworms and centipedes.

The presence of water vapour in the air is called