Soil formation and its significance
A] What is Soil? Soil is the most important resource for us, because we get almost all our food directly or indirectly from it. Vegetables, fruits and animal products and much of our clothing, everything is obtained from soil. It has been derived from parent rock material through process of Weathering( breakdown / dissolving of rocks and minerals on the Earth's surface due changes in the temperatures). Nature and its elements also play important role in existence of soil. Changes in temperatures, running water and wind, contribute in evolution of soil. Chemical and organic changes in soil are also equally important. Whereas, these factors do not act on soil independently or in isolation, but in close association with each other. Fine vegetal and animal remains known as Humus add fertility to soil. It results in making soil fertile. Faulty agricultural practices, deforestation and overgrazing have led to soil erosion in many parts. As a result, soil conservation through improved ag...