Air Pollution

What is Air?

Air is a mixture of gases. It is made up of about 78% nitrogen, about 21% is oxygen. The remaining 1% has Carbon dioxide, argon, methane, ozone and water vapor present in very small quantities.

Air is a combination of different gases that form the atmosphere of the Earth. The constituents of air are nitrogen (78%), oxygen (21%), water vapor, carbon dioxide and other gases such as helium, ozone, argon etc (0.04%) along with dust particles, pollens and spores. This constituent of air may vary on other planets. However, some planets do not have air. Space contains no air.

Constituents of air

What is Air Pollution?

According to the World Health Organization, air pollution is defined as the presence of different substances in a certain concentration in the air that cause harm to human beings and the environment.

Air pollution: Air is contaminated with unwanted substances which are harmful to living and nonliving things.

In other words, when the air gets contaminated due to harmful and unnecessary substances that can affect the living and nonliving things on the earth it is called air pollution.

Pollution of Air due to industries