Learn Class 8 Science - Pollution of Air and Water

What is air pollution? Or what is water pollution? What are the measures that we can take to stop the pollution? We can say that the substances making the water dirty are known as contaminants. Or the natural air gets polluted with smoke.

Meaning (Pollution):

When unwanted substances are present in the environment, they affect several aspects. For example:

• Plants
• Animals
• Biological components
• Physical components

Pollutants:

The source of pollution is any substance. The pollutants can be anywhere.

• Liquid
• Solid
• Gaseous

Such pollutants occur when their concentration is more than natural abundance.

Types:

Air Pollution:

The presence of pollutants in the air causes air pollution.

Water Pollution:

Dirty material and other raw materials in water cause water pollution.

Sound Pollution:

When in a particular area, more rush of vehicles can cause sound pollution.

Soil Pollution:

Excessive use of fertilisers and pesticides in the soil causes soil pollution.

Some measures to prevent pollution:

Many measures can prevent all types of pollution. Some are below:

• One must use the CNG.
• Do the proper management of assets.
• To increase the use of public transportation.
• Use unleaded petrol.