Desertification is the process by which an existing desert spreads across an area which was fertile and wet before. The spreading of the existing desert makes it bigger and a new desert forms. Two main causes for desertification is a natural shift in weather patterns or un-natural bad farming practices. Farmers have put to much pressure on the land, overgraze, overstock or bad cropping techniques. This leads to the degradation of the fertile soil which turns into a desert. A good example is the Sahel region in West Africa, on the edge of the Sahara Desert. The desert conditions are spreading  into the Sahel. Local wildlife and human population will be severely effected by this.






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