The national preparedness vision, national planning scenarios, universal task list, and target capabilities list are the four critical elements comprising the
a. national infrastructure protection plan
b. national preparedness guidelines
c. federal department and agency operations plans
d. national-level interagency concept plan

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.