Global warming is mainly caused by:

1. Burning of coal and petroleum products.
2. Deforestation.
3. Release of methane gas from animal waste.
4. All of the above.

State any two strategies of sustainable development.

What is the function of Pollution Control Boards (PCBs)?

What are non-renewable resources?

Define 'Global warming'.

People are resorting to cut trees to facilitate the process of urbanisation and industrialisation. Are they justified in cutting trees to fulfil their stated needs?

What are renewable resources?

What are the important environmental issues which should receive our attention?

Why has ozone depletion taken place?

In which state did 'Appiko' movement take place?