Explain how soil is formed..
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Soil minerals form the basis of soil. They are produced from rocks (parent material) through the processes of weathering and natural erosion. Water, wind, temperature change, gravity, chemical interaction, living organisms and pressure differences all help break down parent material.
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Natural Resources discusses in detail the resources available on the planet earth especially land, air and water. The discussion begins with a note on biotic and abiotic components of the biosphere. In the first section of the chapter, Natural Resources, the first abiotic component i.e. air is explained in detail. Importance of various gases present in the atmosphere is mentioned along with the discussion on the role that the atmosphere plays in climate control. Thereafter, the concept of wind is taken into consideration. Here, the changes that take place in our atmosphere due to the heating of air and the formation of water vapour is covered.
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