The three R’s that will help us to conserve natural resources for long-term use are:

We should use coal and petroleum judiciously. Why? State any four reasons.

It is important to make small check dams across the flooded gullies because they:

(i) hold water for irrigation

(ii) hold water and prevent soil erosion

(iii) recharge groundwater

(iv) hold water permanently

Arabari forest of Bengal is dominated by:

A successful forest conservation strategy should involve: