Give two factors responsible for land degradation.

State any two strategies of sustainable development.

Define 'Global warming'.

Give two examples of biotic elements.

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

State any two ways to save the environment.

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?

Why has ozone depletion taken place?

How can mini-hydel plants sustain environment?

In which state did 'Appiko' movement take place?