What is the last step in the lawnmaking process?

-the senate has to approve it
-the president has to sign it
-the people have to vote on it
-the legislature has to veto it

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.