a)What is Biomass.
b) An environmentalist on visit to your school suggested the use of three R's to save the environment. Explain what he meant by three 'R's and how you would follow his advice at home.

Explanation

a) The material contained in the bodies of plants and animals is called biomass
b) Three R.s to save the environment : We can reduce pressure on the environment by applying the maximum of reduce, recycle and reuse in our lives.
Reduce means to use less :
By switching off unnecessary lights and fans to save electricity.
By repairing leaky taps to save water.
By not wasting food.
Recycle means to collect plastic, paper glass and metal items and recycle these materials to make required things.
In order to recycle, firstly segregation of waste is necessary so that materials that can be recycled are not dumped along with other wastes. Reuse means to use things again and again.
The used envelope can be reversed and used again instead of being thrown away. The plastic bottles of food items like jam or pickle can be used for storing things in the kitchen.