Name the two groups that are in the legislative branch in virginia

Throughout united states history, new groups of people have been given voting rights. this usually occurs through

Who gave the famous "i have a dream" speech at the march on washington?

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.