What is Pollution?

Definition:

Pollution is the introduction of contaminants or unwanted harmful substances into the natural environment that cause adverse change. 

Pollution can take the form of chemical substances or energy, such as noise, heat or light.

Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

Causes:

Some of the main causes of pollution include industrial emissions, poor disposal of wastes, mining, deforestation, use of fossil fuels and agricultural activities. 

Pollution can affect the air, the land and water bodies throughout the world.

Types:

There are different types of pollution: 

1. water pollution, 

2. air pollution, 

3. land pollution 

4. noise pollution. 

All of these can be found in urban areas. 

Sources:

The main sources of pollution are household activities, factories, agriculture and transport.