How can we reduce the excess use of plastics ?

How can we reduce the rate of global warming?

How can we reduce, reuse and recycle water?

How can we reduce least count of any instrument?

While teaching the chapter " Our Environment " the teacher stressed upon the harmful effects of buring of fossil fuels, plastic, paper etc. The students noticed the extensive use of plastic and polythen in daily life, which can be avoided and the surroundings can be kept clean. they decided to make their school " plastic and polythene" free and motivated each other for its minimum use. (a) Why should the use pf polythene and plastic be reduced in daliy life ? (b) In what ways the students would have avoided the use of plastic and polythene in their school ? (c) How the students would have motivated each other for the success of their decision ?

How can we help in reducing the problem of waste disposal? Suggest any three methods.