Which one is useful as a huge water reservoir?

Differentiate between biodegradable and non-biodegradable substances with the help of one example each. List two changes in habit that people must adopt to dispose of non-biodegradable waste,for saving the environment.

Suggest a few measures for controlling carbon dioxide levels in the atmosphere.

How many wildlife sanctuaries are there in India?

"What was the Chipko Andolan?" How did this Andolan ultimately benefit the local people and the environment?

$A$ successful forest conservation strategy should involve