Question

8 Which two of the following statements about desertification are true?

Desertification ... .
(a) occurs only in Southern Africa
(b) is relatively easy to reverse with the right agricultural techniques
(c) refers to the inability of the soil to maintain its earlier levels of biomass production
(d) is not only limited to the arid and semiarid regions of the world
(e) is always attributable to natural causes
The correct combination of alternatives is … .
(1) (a) and (b)
(2) (a) and (c)
(3) (a) and (d)
(4) (b) and (c)
(5) (c) and (d)

Answer 1

5. (c) and (d)

Step-by-step 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.