The negative effect of bad things which is done by human beings is called pollution. It effect our environment because of which it get polluted.It also harms our environment. our natural resources get polluted.It harms all living beings of earth. It is the major problem of not only Nepal but whole world. when we use chemicals because of it pollution occurs. pollution harms our health. we suffer from different disease.pollution is main problem of city areas. Because of population growth, industries, old bus, car, etc.pollution is created by human being.
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