The answer is DESERTIFICATION
desertification
Desertification - the southward spread of the Sahara - is the major threat to the Sahel.
desertification
Over utilization of ground water, tree felling and over-grazing are some of the reasons for the spread of deserts.
The answer is DESERTIFICATION
The process is called desertification.
It was a shame when the land became a desertification area. Desertification is when a piece of land becomes a desert.
Desertification
Desertification is the process whereby productive land becomes desert.
Desertification
the formation is called desertification)
Africa is at the highest rick of desertification.
desertification
The spreading of a desert is called desertification.
The northern part of Africa is falling victim to desertification.
how can population levels affect desertification