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.

Martin, a 32-year-old human relations administrator at a university, believes that all professors over age 50 are incapable of learning the new educational technologies and are content to keep presenting their same "tired, boring" lectures. he often expresses these views to other administrators and does not encourage any of the "older" faculty members to attend professional development meetings related to new teaching approaches nor does he suggest that the university send them to any of the technology conferences. martin is exhibiting

Surfaces of paintings—such as paper, canvas, and pottery—are referred to technically as

How does the author's discussion of schroeder's study contribute to the development of ideas about how children react to mistakes?