The expansion of deserts into once populated areas is known as ___.
A) sahel formation
B) desertification
C) rain shadow effects
D) deflation
E) desert migration

Question

Quizplus · Accepted Answer

Desertification is the term used to describe the expansion of desert into previously populated or productive areas. The process is driven by a variety of factors, including climate change, overgrazing, deforestation, and soil degradation. Sahara, for example, is expanding southward by up to 30 miles per year, and is now encroaching on large areas of the Sahel region of Africa, where millions of people rely on subsistence farming and herding for their livelihoods. Desertification is a major environmental and economic issue, and is exacerbated by the effects of global warming and human activities such as dam construction and intensive agriculture.

The Expansion of Deserts into Once Populated Areas Is Known