How is the best chapter in the Bible? In your own thinking

What was discussed at the yalta conference

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.

Ais a group of people living and working under a set of rules and traditions.