NEET BIOLOGY

Detailed explanation-1: -Desertification in the Sahel can largely be attributed to greatly increased numbers of humans and their grazing cattle.

Detailed explanation-2: -This overgrazing causes a loss of vegetation-when herds of animals eat all the grass on a piece of land, the soil underneath is left vulnerable and unable to grow back quickly enough to meet the grazing demand of the livestock.

Detailed explanation-3: -The Sahel Region has lost millions of hectares of easily accessible farming land to the desert, thus creating food insecurity and loss of income for thousands, if not millions, in the region.

Detailed explanation-4: -Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing.