List any four main matrerial that you feel neccessary

The diffusion of religion is biggest described as the process of

What was one of the main goals of european exploration

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.