Tuesday, October 19, 2010

Natural resources

As the name suggests natural resources are resources that occurs naturally in our environments.Some of the examples of natural resources are coal, trees, natural gas, limestone, etc.

There are two types of natural resources:
1.Renewable resources:They can be reproduced easily. Sunlight, air, wind, etc., are continuously available and their quantity is not affected by human consumption.
2.Non-renewable resources:Minerals and fossil fuels take a long time to formed, so once exhausted by human consumption, its difficult to replenish.They are known as non-renewable resources.

On the basis of availability, natural resources can be categorized as exhaustible and non-exhaustible resources.Air and water are categorized as non-exhaustible since they are abundantly available.Coal and petroleum are examples of exhaustible natural resources.

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