Natural Resources Notes

• Pollution is defined as the addition of unwanted particles or the removal of essential ones in/ from the environment which causes harm to the living world.
• It can also be defined as an undesirable change in the physical, chemical or biological characteristics of our environment that can harmfully affect biotic and abiotic processes.
• When such changes occur in air it is known as air pollution.
• Air pollution is defined as the undesirable physical, chemical and biological changes in the air due to various natural processes or manual activities that disturb the environment and affect the biological health.

Causes of air pollution:

Forest fire:

• A forest fire is a natural disaster which consists of burning of forested area that damages the wildlife and affects the human health also.

• Emissions from the forest fire can travel a long distance and can affect the air quality and biological health.

Volcanoes:

• Volcanic eruption is one of the most important natural causes of air pollution.

Deforestation:

• Deforestation is defined as cutting of trees at a large scale and rapid rate.
• As the population is increasing, deforestation is done residential, agriculture and other basic requirements.

• Deforestation causes the permanent destruction of forest that result in disturbance of biogeochemical cycles.

Combustion of fossil fuels: