The addition of unwanted and harmful materials in the enviroment, is called pollution
Pollution is anything that makes the earth dirty and unhealthy. Land, air, and water are all affected by pollution.Pollution takes up space on our land. Many of the things people use every day come in packages, like food, games, school supplies, and electronics. These packages end up in large underground dumps called landfills. Landfills make land unhealthy for animals and people.