India : Location, Geologial Structure and Physiography-Il — Social Science STD 9 — Question

1. Soil is the result of denudation of rocks. The rock surface is eroded due to factors like temperature, rain, snow, air, vegetation and insects in result it turns into powdery form. Thus it forms the land layer.
2. In this land layer there are gravels, smaller stones, pebbles, soil particles etc., which are known as ‘Regolith’. It contains only mineral contents.
3. The biotic matter, air and water are mixed with it. Finally, soil is formed out of this mixture.

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