Home News CHEMISTRY FORM FOUR STUDY NOTES TOPIC 4: POLLUTION

CHEMISTRY FORM FOUR STUDY NOTES TOPIC 4: POLLUTION

Pollution
can be defined as the introduction by human (or animal) activities,
directly or indirectly, of substances or energy into the environment
resulting in harmful effects which may endanger human health and harm
living resources and ecosystems.

The Concept of Pollution
Explain the concept of pollution
Pollution
can also be defined as the introduction of contaminants or pollutants
into the natural environment. The environment comprises of living
(biotic) and non-living (abiotic) things such as plants, animals, air,
land and water.
Contaminants
or pollutants are harmful substances introduced into the environment
that disturb the balance of nature. Pollution can be in the form of
chemical substances or energy such as noise, heat or light.
Human
activities play a major role in the pollution of the environment.
Humans engage in a myriad of activities such as agriculture,
manufacturing, transport, waste disposal, mining etc. All of these
activities contribute to environmental pollution in one way or another.
There are three main types of pollution:
  • Terrestrial (land) pollution
  • Aquatic (water) pollution
  • Aerial (air) pollution
SHARE