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Soil is the mixture of mineralsorganic matter, gases, liquids, and the myriad of organisms that together support plant life. It is a natural body that exists as part of thepedosphere and which performs four important functions: it is a medium for plant growth; it is a means of water storage, supply and purification; it is a modifier of theatmosphere of Earth; and it is a habitat for organisms that take part in decomposition of organic matter and the creation of a habitat for new organisms.
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