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AI-generated answer
1.5.1 Define the concept of desertification:
Desertification refers to the process by which fertile land becomes desert, typically due to a combination of natural and human activities that lead to the degradation of soil quality, vegetation loss, and a decline in biodiversity. This transformation results in the expansion of arid or semi-arid regions at the expense of previously habitable and productive land.
1.5.2 Quote a statement from the extract that lists possible natural causes of desertification:
"In the change in climate and weather patterns is triggering a rapid spread of the Sahara Desert..."
1.5.3 Name TWO human activities that contribute to desertification:
1. Overgrazing by livestock, which depletes vegetation cover and accelerates soil erosion.
2. Deforestation for agricultural expansion or fuelwood, leading to soil degradation and reduced biodiversity.
1.5.4 Discuss how the planting of trees can 'serve as a buffer zone' to manage desertification:
Planting trees can help manage desertification by creating a barrier against soil erosion and desert encroachment. Trees stabilize the soil with their roots, prevent wind erosion, retain moisture, and promote biodiversity. By forming a green belt, trees act as a protective shield that helps maintain soil fertility and prevent further degradation.
1.5.5 Besides afforestation (planting of trees), explain TWO other ways in which desertification can be managed:
1. Sustainable land management practices, such as terracing, contour plowing, and agroforestry, help retain soil moisture, prevent erosion, and enhance soil fertility.
2. Implementing water conservation methods like rainwater harvesting, drip irrigation, and proper water management to ensure efficient use of limited water resources in arid regions.
1.5.6 Comment on the positive impact that the green belt project would have on people living in this region:
