Plate Tectonics

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Across
  1. 2. along
  2. 5. continents slowly moved over earth's surface
  3. 7. supercontinent
  4. 8. ocean floor sinking
  5. 10. cracking
Down
  1. 1. deep valley
  2. 3. underwater canyons
  3. 4. atop the mantle
  4. 6. away
  5. 9. towards