There is a lot of pollution in our world.

Three forms of pollution are air, land, and water pollution.

There are six air pollutants in the world today that cause serious health problems.

One example of an air pollutant is the carbon monoxide from our cars' exhausts.

Kinds of land pollution are litter, garbage, pesticides and herbicides, and industrial activity.

Water pollution is also a problem.

Garbage in our oceans, waste from the pulp and paper industry, and oil spills cause water pollution.

A lot needs to be done to take action against the constant pollution on our Earth.