Resources can be classified in different ways, namely natural and man-made, renewable and non-renewable, and individual, community and national resources.
Renewable and Non-renewable Resources: Some resources have the ability to renew themselves in a given periods of time. Plants and animals have the natural ability to regenerate themselves. Forests and wildlife are renewable resources. Minerals are non-renewable resources. Once they exhaust, they can't be reproduced. Water, forests, solar, wind and tidal energy are some of the important renewable resources.