Question

Which action is a direct cause of desertification?

(1) contaminating fresh water supplies
(2) burning fossil fuels in factories
(3) damming rivers to produce hydroelectricity
(4) removing vegetation through overgrazing

Answer 1

The best anwer is 4); vegetation is vital from keeping a place from becoming a desert. It transforms the ground into that with more nutrients, captures water and stops erosion, as well as protects the nutrient parts of the soil from being carried away with the wind.