emerged in Europe at the end of the fourteenth century with the development of printing presses and the wider availability of paper. A. Printmaking B. Fresco C. Manuscript Illumination D. Oil painting

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.