What role does erosion play in desertification in Africa?

A. Erosion causes the soil surrounding the
plants to be blown or carried away, which
causes the plants to die.

В. Erosion causes tropical climates in Africa to
change into desert climates that cannot
support life.

C. Erosion is caused by overgrazing, which
causes plants to die and leave behind soil
without any nutrients.

D. Erosion strips away nutrient-rich topsoil and
leaves behind soil that cannot support crop
growth.