In the world, there are many causes of pollution.
One of the causes of pollution is the usage of too many vehiculs that use fossil fuels and that leads to the green house effects that heat up the earth.
In additon there are people that throw objects that are dangerous to mother nature which a another cause of pollution. For example: plastic bags, bottles, containors...
That last cause of pollution is the abuse of breeding of animals and growth of crops that are used as a source of food. There is is too much of it so to get the water and the nourishments, it takes alot of energy and it leads to having more pollution.
