Resources

External process       I t   refers to the external phenomena that occur on or above the earth’s surface. External processes shape the relief created by internal processes. External agents carry out this process: water, ice, wind, atmosphere and human beings. They include all the changes that alter or wear down the rocks and deposit materials resulting from erosion.   Weathering  Weathering is the fracturing or disintegration and decomposition of rocks by natural agents. It is a static process. There is no movement of weathered material except where the pieces fall due to the force of gravity.  Weathering is classified into three types: 1. Physical or Mechanical Weathering  2. Chemical Weathering  3. Biological Weathering Mechanical Weathering Mechanical weathering is the physical disintegration of rocks due to factors like heat, water and frost. Small pieces or particles of rock prise off from the rock surface. ...

 RESOURCE PLANNING AND ITS NEED FOR INDIA RESOURCE PLANNING: Resource planning refers to the planned and judicious utilisation of resources  IT'S IMPORTANCE: Resource planning:   (i)Planning is the widely accepted strategy for judicious use of resources. It has importance in a country like India, which has enormous diversity in the availability of resources. (ii)There are regions which are rich in certain types of resources but are deficient in some other resources.   (iii)There are some regions which can be considered self sufficient in terms of the availability of resources and there are some regions which have acute shortage of some vital resources. For example, the states of Jharkhand, Chhattisgarh and Madhya Pradesh are rich in minerals and coal deposits.   (iv)Arunachal Pradesh has abundance of water resources but lacks in infrastructural development. The state of Rajasthan is very well endowed with solar and wind energy but lacks in water resources. ...

  Classification of Resources: (a) On the basis of origin: Biotic and Abiotic. (b) On the basis of exhaustibility: Renewable and Non-renewable. (c) On the basis of ownership: Individual (Personal), Community, National and International. (d) On the basis of status and development: Potential, Developed, Reserve and Stock. Biotic Resources are obtained from the biosphere. They have life or are living resources, e.g., human beings, fisheries, forests, etc. Abiotic Resources include all non-living things, e.g., rocks and minerals. Renewable Resources: The resources which can be renewed or reproduced by physical, chemical and mechanical processes are known as renewable or replenishable resources, e.g., water, wildlife, forests, solar energy, wind energy, etc. Non-renewable Resources: The resources which once get exhausted, cannot be remade. They take a long geological period of time, i.e., millions of years in their formation, e.g., minerals, fossil’ fuels, etc. Individua...