RESOURCES RESOURCES All materials available in our environment which satisfy our needs are called as Resources. O All resources have some value. Value means worth. Some resources have economic value and some do not, but both are important and satisfy human needs. 0 Some resources can become economically valuable with time. Time and technology are the important factors that change substances People themselves are the most important resource. It is their ideas, knowledge, inventions and discoveries that lead to the creation of more resources. Each discovery or invention leads to many others. For example- Discovery of fire led to the practice of cooking Invention of the wheel resulted in the development of newer modes of transport.
TYPES OF RESOURCES: Resources are catogorised into natural, human made and human. 1. Natural resources are those resources that are drawn from nature and are used without much modification-air, water, soils, minerals are the natural resources Natural resources are classified into different groups depending upon their level of development and use, origin, renewability and distribution Natural resources also called as 'gifts of nature'.
(i) On the basis of level of their development and use, naturalresources can be classified into ACTUAL AND POTENTIAL RESOURCES ACTUAL- Those resources whose quantity is Known These resources are being used in the present
POTENTIAL RESOURCES- Those resources whose entire quantity may not be Known These are not being used at present and could be used in the future.
On the basis of origin, the natural resources can be BIOTIC AND ABIOTIC RESOURCES BIOTIC RESOURCES It includes all the living things. For example- Plants & animals ABIOTIC RESIURCES It includes all the non-living things For example- Soil, rocks, minerals
ON THE BASIS OF RENEWABILITY RENEWABLE AND NON RENEWABLE RENEWABLE- Those which can get renewed or replenished quickly are called as Renewable resources. They are also called as Inexhaustible resources For e.g. solar and wind energy
NON RENEWABLE RESOURCES Those which have a limited stock Once the stocks are exhausted it may take thousands of years to be renewed or replenished are called as Nonrenewable resources. They are also called as Exhaustible resources For e.g. such as coal, petroleum and natural gas.
On the basis of distribution, natural resources can be classified into- UBIQUITUOS AND LOCALISED RESOURCES Ubiquitous resources are found everywhere on the earth. Land, water, air are ubiquitous esources.
LOCALISED RESOURCES Localized resources are found only in certain places, like copper and iron ore
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