References of drought and desertification​

Stone mountain was formed during the formation of the blue ridge mountains around 300-350 million years ago and is considered part of the appalachian mountains. it formed as a result of the upwelling of magma from within the earth's crust. this upwelling, or solidified to form the that became stone mountain.

In africa what do they call a crop grown for direct sale and not for use?

According to the population pyramid, in 2000 china had about 120 million people in which age-group?