Over utilization of ground water, tree felling and over-grazing are some of the reasons for the spread of deserts.
The Sahel is a semi-arid region south of the Sahara.
deforestation
The answer is DESERTIFICATION
Because the land that is now desert may revert to grassland
Deflation of sand and silt from the surface
The process that forms desert pavement is called deflation.
The Kalahari Desert and it spreads between three nations: Namibia, South Africa and Botswana
There is no desert that spreads through 10 states in the United States.
The Sahel is a semi-arid region south of the Sahara.
subduction
Subduction .
The process is called desertification.
A process called weathering
deforestation
Thw Kalahari Desert covers almost all of Botswanna.
The answer is DESERTIFICATION
desertification