Which energy resource is renewable?
a. coal
b. oil
c. natural gas
d. wind?

Describe at least three examples of how people and wildlife have adapted to their environments in the middle east.

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

What is the border between layers a through f and layer g called?