Sancho’s Chemistry Lesson Notes For Ordinary& Advanced Level

SANCHO’S CHEMISTRY LESSON NOTES FOR ORDINARY& ADVANCED LEVEL

Pollution refers to the introduction of harmful or undesirable substance to the environment

(i.e. the act of making air, water and soil unfit for use). Or

Pollution is the contamination of Earth’s environment with materials that interfere with human

health, the quality of life, or the natural functioning of ecosystems (living organism and their

physical surroundings).

Pollutant is any substance or species produced either by a natural source or by human activity

and produces adverse (unpleasant) effect on the environment. In addition, pollutant is a

substance already present in atmosphere, which spoils the environment by increase of its

concentration due to human activities.