What are the 2 causes of desertification in the Sahara ?

water and sand

Explanation:

Population growth - the population in some desert areas is increasing. In places where there are developments in mining...

Removal of wood - in developing countries, people use wood for cooking. As the population in desert areas increases,...

Overgrazing - an increasing population results in larger desert areas being farmed.

Explanation:

answer; negative punishment;

answer; elasticity of the lungs decreases;