From kepler's third law, an asteroid with an orbital period of 8 years lies at an average distance from the sun equal to?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Which of the following describes what rocks usually are composed of ,

Distance that the transcontinental railroad covered from omaha to san francisco.