density and earth science

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Across
  1. 3. boundary where the tectonic plates are sliding past each other
  2. 5. hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present local
  3. 6. Canadian Scientist who developed Theory of Plate Tectonics
Down
  1. 1. supercontinent containing all of Earth's land that existed about 225 million years ago.
  2. 2. The theory that pieces of Earth's outer crust are in constant motion.
  3. 4. two tectonic plates that are moving away from eachother