Why are experts concerned about desertification in Africa?
A.
It could lead to a decrease in oil production, affecting government income in the region.
B.
Deserts, like the Sahara, may begin to shrink, destroying ecosystems.
C.
Desert wildlife, like scorpions and snakes, may spread into heavily populated areas.
D.
Affected areas get hotter and drier, which may lead to a decrease in food production.