Study material for students of all streams. Desertification Factors Responsible and How To Combat It. Definition- Desertification is not the natural expansion of existing deserts but the degradation of land in arid, semi arid, and dry sub-humid areas. It is a gradual process of soil productivity loss and the thinning out of the vegetative cover because of human acitivites and climatic variations such as prolonged droughts and floods.

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