What type of rules and regulations should be executed to stop untouchability

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.

4. what were some of the losses suffered by germany as a result of the treat of versailles?

Discuss three factors that affect your daily food choices. for each factor with a negative outcome, suggest at least one change you could make in your daily behavior that would turn that negative outcome to a positive outcome. cite your sources in a reference list.