WORLD HISTORY

Detailed explanation-1: -CONSEQUENCES OF DESERTIFICATION Loss of biodiversity by worsening the living conditions of many species. Food insecurity due to crop failure or reduced yields. The loss of vegetation cover and therefore of food for livestock and humans.

Detailed explanation-2: -Desertification in Africa Africa is the simple answer to the question: where is desertification happening? More specifically, desertification plays its largest role in the grasslands of East Africa, the Kalahari Desert and the Sahara Desert. These regions span over 65 percent of the land.

Detailed explanation-3: -Drought and its impacts can be exacerbated by human activities that are not adapted to the local climate and/or soil type. Land degradation is the process of turning fertile land into less or non-productive land. In extreme cases, in drylands, this is called desertification.

Detailed explanation-4: -Called CLIMBER-2 (for CLIMate and BiosphERe, version 2.1), the model led to the conclusion that the desertification of North Africa began abruptly 5, 440 years ago (+/-30 years). Before that time, the Sahara was covered by annual grasses and low shrubs, as evidenced by fossilized pollen.

Detailed explanation-5: -Overgrazing is the major cause of desertification worldwide. Other factors that cause desertification include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that make soils more vulnerable to wind.