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Question 3B
Desertification (i) Name the area shaded orange marked A to B on the map above. (ii) Explain one human cause of desertification. (iii) Describe two ways to limit ... show full transcript
Step 1
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The area shaded orange marked A to B on the map above is known as The Sahel. This region stretches across Africa and is characterized by a semi-arid climate, lying between the Sahara Desert to the north and the more humid savannas to the south.
Step 2
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One significant human cause of desertification is deforestation. This occurs when large areas of forest are cleared for agricultural activities or urban development, leading to a loss in soil structure and moisture. Without tree roots to stabilize the soil, it becomes more vulnerable to erosion, and the land can rapidly degrade into desert.
Step 3
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Two effective ways to limit the spread of deserts include:
Afforestation: This involves planting trees in areas that have been deforested or degraded. Trees help to hold the soil together, increase moisture retention, and improve the local microclimate, thereby reducing the likelihood of desertification.
Irrigation Schemes: Proper irrigation techniques can help to maintain soil moisture and enhance agricultural productivity. Strategies such as drip irrigation minimize water wastage and promote sustainable farming practices, which can prevent the encroachment of desert areas.
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