Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutant s. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.

Pollution comes from the Latin ‘polluere’ which means to contaminate. So, pollution is something that contaminates the environment. Pollution means the presence of substances in the air, water, and land, which has an adverse effects (harmful or poisonous) on living organisms (human-beings, animals, plants, etc.) and on environment.

conservation: Pollution. Pollution is a special case of habitat destruction; it is chemical destruction rather than the more obvious physical destruction. Pollution occurs in all habitats—land, sea, and fresh water—and in the atmosphere.