Answered

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

Verified Answer :

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.

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