Natural Resources Notes

• Natural causes of air pollution are not under our control but some measures can be taken to control manual activities.
• Measures must be taken to decrease the amount of particles and toxic gases at the site of its production.
• If pollution is caused by some raw material, another raw material should be used which spreads less pollution.

Example: use of unleaded petrol.

• Earth is the only planet where water is found in liquid form too and thus it supports the survival of living organisms.
• It is essentially required for the survival of living organisms including all plants, animals and micro organisms.
• Major portion of a living cell/ system is comprised of water and all cellular processes occur in water (aqueous) medium.
• It helps in transportation of various materials in a living system.

Occurrence of Water Resources:

• Any change in physical biological and chemical properties of water is known as water pollution.
• Water pollution can also be defined as the addition of unwanted particles or removal of important components from the water due to manual or natural processes.

Causes:

• Components that lead to water pollution are known as water pollutants. They arise from different sources.

Sewage: