plate tectonics

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Across
  1. 3. cruve
  2. 5. move
  3. 8. ocean trench
  4. 9. bounders
  5. 10. zone
Down
  1. 1. ranges
  2. 2. material
  3. 4. two blocks
  4. 6. crust
  5. 7. floor spreading
  6. 8. ocean ridges