Was the U. S. or the U. S.S. R. the primary cause of the cold war, and why?

Which reason best explains why certain areas of southwest asia have low population density? a. the semi-arid climate makes farming difficult because it produces very little rainfall. b. the moist climate limits job opportunities because it reduces oil production. c. the semi-arid climate produces heavy rainfall that contributes to devastating floods. d. the moist climate reduces agricultural production by causing water shortages.