Introduction of harmful substance into the environment either directly or indirectly will contaminate the air, water and land & soil called as pollution.
There are several pollutions, which comes from different sources and have different consequences. If you understand the basics, then you can also contribute in reducing the danger to the environment
Pollution makes people, plants and animals sick or even kills them. It also makes the climatic change which leads to several disasters.
The different pollutions are as follows: