Why is water conservation necessary?
a. we need to prepare for the future even though water is plentiful now.
b. water shortages are expected in 40 states before the year 2026.
c. citizens must use less water because the government does not enforce conservation.
d. reservoirs are full throughout the nation, so there is nowhere to store excess water.

Which of the following statements os an example of how climate and vegetation influence lifestyles? a. many south koreans enjoy watching american films and listening to american music. b. many mongolians are pastoral nomads who raise livestock for a living. c. many chinese peasants are moving to cities in search of better jobs opportunities. d. many north koreans wish to see relatives now living in korea.