Question

which is a cause of desertification?
o farming
o creating reservoirs
o overgrazing
o driving motor vehicles

Explanation:

Overgrazing removes vegetation cover, which exposes soil to erosion and can lead to desertification. Farming can have some impact but is not as direct a cause as overgrazing. Creating reservoirs can change local hydrology but is not a primary cause of desertification. Driving motor - vehicles mainly causes air pollution and has little direct link to desertification.

Answer:

C. overgrazing