Describe three aspects of soup kitchens in 1930s

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.

What is the name for the gaseous sphere surrounding earth

Name the four great lakes that make up part of the us-canadian border. describe important characteristics of these lakes and explain their importance to both canada and the united states. make sure your answer is written in complete sentences.