What gives oil many oil exporters an undue advantage over U.S. and European economic and foreign policies?
a. cyclical changes
b. climatic changes
c. higher technology
d. sovereign wealth funds
e. cap and trade system
Question 2
What causes water scarcity?
a. a shift in the distribution and cleanliness of fresh water
b. a decrease in the volume of water on earth
c. an increase in desalinated water
d. an increase in the volume of water on earth
e. a decrease in the number of dams