Relate the movement produced by seismic waves to the observations a person would make of them as they traveled across Earth's surface.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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b.transmitters send radio waves, and receivers capture radio waves.

measure their densities same density, same sub

option number c is the right answer.