science

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Across
  1. 2. drift theory
  2. 3. boundary
  3. 6. pull
  4. 7. trench
  5. 9. spreading
  6. 12. plates
Down
  1. 1. ranges
  2. 4. boundary
  3. 5. boundaries
  4. 8. core
  5. 10. core
  6. 11. push