When Judy's professor failed to recognize that Judy had her hand raised to answer a question, Judy began to think her professor was unfriendly. Judy later learned that the professor's limited vision kept him from seeing her raised hand, but she continued to think he was unfriendly. Judy's reaction BEST illustrates?

Imagine you are driving down the highway and reading a sign that states save the planet don't litter which technique of policy enactment is being used

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.

These two countries developed a strong trading relationship during the time of the renaissance. name them?