As united states importation of oil rises, so has the
a. importation of natural gas.
b. national debt.
c. comparative advantage.
d. gross domestic product.

After fidel castro became the leader of cuba, many cubans moved to the united states. why did cubans leave their home country? a. job opportunities b. religious reasons c. political reasons d. educational opportunities

What is polytheism? the belief in one god. the belief in more than one god. the belief that there is no god.

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.