desertification mean
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Soil erosion results in movement of fertile top soil from one region to another thus reducing its fertility . When the top fertile soil is constantly removed from a region and only infertile subsoil is left behind , in such a soil only sparse vegetables can grow . This way , soil erosion gradually turns lush green into deserts . This is called desertification.... when the top fertile soil is lost it turns into deserts as it is difficult for plants to grow .
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Removal of the top layer of the soil exposes the lower , hard and ro cky layers This soil has less humus and is less fertile . Gradually the fertile and gets converted into deserts It is called desertification .
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