Why is the Sahara (in Africa) considered a physical region?

because it turns out to be that Santa was a forest before and then people started cutting trees and not planting new ones again this kept on going for years and after that the entire forest turned into a dessert also that why they have a few dried out trees

c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.

answer called a epicycle;