In which sphere would lightning be found?
a. biosphere
b. hydrosphere
c. magnetosphere
d. atmosphere

Why is the united states a constitutional republic? why is china, which has a constitution, not one? compare the forms of government in the united states and china.

According to this map, which of these statements is most correct? a) fewer people are contracting hiv in europe than in the past. b) fewer people are contracting hiv in southern africa than in the past. c) egyptians are less likely to contract hiv than people in sub-saharan africa. d) people in canada contract hiv more frequently than people in the united states.

What is the most common way for americans to receive their news?