List some of the powers of the were granted by the articles of confederation

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.

If we can't separate our civilized self from our savage self which will take over and why

According to machiavelli what will happen to a leader when things go wrong and he is in need of support