Tectonic plates

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Across
  1. 2. core
  2. 4. boundaries
  3. 6. drift
  4. 7. Boundary
  5. 9. properties
  6. 10. core
Down
  1. 1. zone
  2. 3. boundaries
  3. 4. plates
  4. 5. floor spreading
  5. 8. tectonic theory