Our resources are basically of two kinds, viz, renewable and non-renewable. Let us see what they mean. Some of the resources of the earth are replaced from time to time by natural multiplication as for example, is vegetation. In other words, these resources are inexhaustible and are therefore called renewable resources. Forests, pastures, wild life. and aquatic life are renewable resources. Water is also a renewable resource because it recycles. There are some
other resources, such as minerals which once used are lost for ever. They cannot be regenerated. Mineral deposits were formed slowly in millions of years. Once a deposit is used, it cannot be regenerated. For example, petrol gets burnt up and cannot be recovered. These are known as non-renewable resources. Similarly, the formation of soil is a very slow and long term process and it takes thousands of years. It is, therefore, not renewable in the life span of even several generations of people. Hence it is also a non-renewable resource.
No comments:
Post a Comment