Page 105 - SST Class 08
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Renewable Resources                                     century. So, we need to be careful while using
                                                                    them in our automobiles and industries, and
            The renewable resources can be renewed or
                                                                    alternative resources have to be found to replace
            replenished in a relatively small time. That is, they   them.
            can be used without endangering their future use.
            For example, trees are cut down and used for                Quiz Time
            different purposes, but                                  Fill in the blanks :
            they can be grown, so
            they   are    renewable                                  1. The biotic resources can be both __________
            resources.   The    only                                    and __________  .
            care has to be taken                                     2. Legal value of an article depends on the
            that the rate of their                                      importance given to it by the __________ .
            consumption       should                                 3. __________   resources are available on the earth
            not exceed the rate of
                                             A petrol pump              in a limited quantity.
            renewability.
                                                                     4. Water is a __________  resource.
            Non-renewable Resources
                                                                    Classification Based on Utility
            Some resources get exhausted after use, such as
            minerals. These are known as non-renewable              Resources can be classified on the basis of their
            resources. These are available on the earth in a        utility and application.
            limited quantity. So, care has to be exercised in
                                                                    Raw Materials
            their use.
                                                                    The raw materials are used for making other
            Based on renewability, natural resources can also       things, such as iron, coal and limestone are
            be classified into biotic and abiotic resources.
                                                                    obtained from the earth and are used as raw
                                                                    materials in various industries; silk, wool, hide,
                 Info Bits                                          furs and ivory are obtained from animals and are
                 Info Bits
                                                                    used in manufacturing different articles. Similarly,
            Coal and petroleum are examples of non-recyclable       agricultural raw materials are cotton, oilseeds,
            resources as they cannot be melted and reused.          rubber, tobacco, sugar cane, beetroot etc. which

            Biotic Resources                                        are used for manufacturing a variety of things.
            The biotic resources are obtained from the              Food
            biosphere and include living things, such as            Food is the basic need of human beings. Food is
            human beings, birds, animals, fish, insects, forests    obtained from plants and animals, such as cereals,
            and their products etc. They can be both                pulses, vegetables, fruits, beverages, milk, dairy
            renewable and non-renewable.                            products etc.
            Abiotic Resources                                       Energy

            These resources are obtained from non-living            Energy is the basis of all types of agricultural and
            things and are found in the earth, such as land,        industrial development. It is required in all the
            water and minerals etc.                                 sectors of economy.

            With the help of technological advancements,
            some of the resources have been recycled. For
            example, most of the metals like iron, silver, gold
            and paper can be recycled. But fossil fuels, such
            as coal, gas and petrol, etc. are exhausted fully
            after use. The present quantity of world’s oil
            resources is not expected to last beyond this                   A coal mine           A petroleum industry
                                                                                        Resources and Their Types
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