What it is the POLLUTION?

Pollution means dirtiness, degradation, contamination, illness.
The action of man on the environment almost always has a negative effect, because of the had precautions that are not used.
It happens many times that the pollution in a certain location, either in the water, air or on land, it compels that many species of animals and plants that live there create conditions to be able to adapt themselves to survive in its environment.
In other cases, the contamination is so strong that many species end up dying and are extinguished forever.