Which statement best describes a scientific question? it must be based on a hypothesis. it must be supported by data. it must be testable. it must be original.

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america

Which step is not included in the step approach to calculating the greatest common divisor?

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.