Jawapan

2016-09-03T12:44:17+08:00
1) We can save the trees and increase the supply of oxygen to the living things on this planet as well as reducing the greenhouse effect.

2) Maintains the earth for a more secured, safer and comfortable living.

3) For a healthier and more hygienic environment.

4) We can reduce the waste disposed of and hence, control disease from spreading.