Question

What is pollution? how many types of pollution are there? what are they?

Answer 1

pollution:the presence of substance which harms to nature,humans etc......................
types of pollution :there are 6 types of pollution
they are.......
1.air pollution 
2.noise pollution 
3.water pollution 
4.land pollution
5.light pollution
6.thermal pollution 

Answer 2

Answer:

presence of a substance which harm to nature

types of pollution

air pollution

noise pollution

land pollution

water pollution