Water Usage in Arid Regions – Phoenix, AZ. Follow the feature highlighted by the Problem 14 placemark to the west (continue across the tunnels/pipelines that look like gaps). Where does it ultimately originate (the Problem 15 placemarks highlight the ends of a long tunnel)? Choose one: Colorado River Pacific Ocean a glacier in the Sierra Nevada Gulf of California

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare