Identificar audio textbook you will hear a series of words. based on the contextos illustration and your knowledge of the vocabulary, write each word you hear in the appropriate category.

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.