Pollution is harmful for environment . It is harmful for environment . Smoke of factories effect to air and man is directly effected through this harmful air....

it is harmful for lungs ... waste of factories are thrown in water . when this water is used many disease are effected to men. 

There is too many noise in cities it is harmful for environment and causes for many diseases...........

 There are four types of pollution .

1..Air pollution

2.Noise pollution

3.Soil pollution

4.Water pollution

 All this pollution  are very harmful for us and our environment.. Air pollution causes many harmful gases such as oxygen , carbon monoxide and sulphur dioxide etc.. this are caused by factories and vehicles...

Soil pollution are caused by man made in fields by urea which are harmful for soil and caused for many diseases................