Shays' rebellion was significant because it a) shifted the balance of power from free states to the slave states. b) demonstrated the opposition of the anti-federalists to the constitution. c) provided the background to the outbreak of the revolutionary war in 1775. d) demonstrated the weaknesses of the government under the articles of confederation. elimin

If both the president and the vice president can no longer serve, who will become the next head of state?

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.

Which of these is an example of physical systems impacting the environment? a flood causes erosion and loss of shoreline. people fill a lake before building houses near it. an earthquake causes a building to fall. a native tribe considers a volcano to be sacred.