C. Botswana, is mainly covered by the Kalahari Desert.
Answer:
The revision probably INCREASED world trade because gasoline that previously couldn't be sold in the United States was then ALLOWED TO BE SOLD THERE.
Answer:
wooly mammoths are basically fuzzy elephants which are now extinct because of hunting. Tusks from a wooly mammoth are valuable because Woolly mammoths are extinct.What makes wooly mammoth bones easier to collect is mining.