Which nation is an example of a government in which the president and prime minister are both active participants in the day-to-day administration of the state? A) blue B) green C) red D) yellow

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.