As a city planner, what is one solution you would create to fix problems with overcrowding in the world's cities? does your solution fix problems with the city's governmental capacity or the environment's carrying capacity?

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.