WORLD HISTORY

Detailed explanation-1: -desertification, also called desertization, the process by which natural or human causes reduce the biological productivity of drylands (arid and semiarid lands).

Detailed explanation-2: -Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing. These unsustainable land uses place enormous pressure on the land by altering its soil chemistry and hydrology.

Detailed explanation-3: -Desertification is a form of land degradation by which fertile land becomes desert.

Detailed explanation-4: -Desertification is the degradation process by which a fertile land changes itself into a desert by losing its flora and fauna, this can be caused by drought, deforestation, climate change, human activities or improper agriculture.

Detailed explanation-5: -Clearly, desertification will affect all soil functions, with greatest impact being on biomass and food production, biological habitat, and environmental services. When soils are degraded, they lose their capacity to capture and store water, nutrients and carbon and to support microbiological processes.