Which of maslow's needs is defined by requiring shelter and protection from danger?
a. physical stage
b. safety stage
c. social stage
d. esteem stage

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.