Choose the correct phrases. A) The houses of Puerto Rico have basements. B) The houses of Puerto Rico have garages called canopies. C) The houses of Puerto Rico are constructed of cement. D) The houses of Puerto Rico are exactly the same as the houses of the United States.

In a democracy, this is held by the citizens who elect leaders to political office

To take a standard test such as the psat or plan students must have an

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.