Page 371 - Primary Six Notes

Types of pollution

1. Air pollution—caused by smoke and fumes / poisonous

gases.

2. Soil pollution—caused by agricultural sprays, industrial

waste , refuse etc

3. Water pollution—By silt , oil spills , refuse , human waste

and industrial waste washed into it.

4. Noise pollution—Due to too many vehicles or industries in

the environment loud music etc

Effects of pollution

 Poisoning of soil and water by chemicals dumped on them.

 Death and disappearance of biodiversity (variety of plants

and animals living things )

 Out break of disease in the environment

 Loss of soil fertility leading to poor yields

 Formation of acid rains due to gases from industries and ve-

hicles as they dissolve in rain.

 Destruction of habitats for many plants and animals

 Less production of plants such as fibres , timbers fruits and
other construction materials