Plate tectonics

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Across
  1. 4. Who came up with the Continental drift theory
  2. 6. what causes plate tectonic to move
Down
  1. 1. Theory that all of earth's surface was once connected but has drifted apart
  2. 2. supercontinental that existed many years ago
  3. 3. Pieces of the lithosphere that move on the asthenosphere
  4. 5. theory that lithosphere is divided into pieces moving on the asthenosphere