Answer:
5. (c) and (d)
Explanation:
Dessertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
The cause of dessertification.
Overgrazing is the major cause of desertification worldwide. Other factors that cause desertification include urbanization, climate change, overdrafting of groundwater, deforestation, natural disasters and tillage practices in agriculture that place soils more vulnerable to wind.
Desertification reduces the ability of land to support life, affecting wild species, domestic animals, agricultural crops and people.
The reduction in plant cover that accompanies desertification leads to accelerated soil erosion by wind and water.