Desalination:
a. can be used to provide fresh water
b. is being done through the use of nuclear power
c. produces over 50 million gallons of water a day
d. all of the above

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

Compare demographic and environmental effects of the columbian

Physical features of central america look at the map above which of the following is true