Across
- 3. Drift
- 9. Spreading
- 10. earthquake
- 11. slip
- 15. Subduction
- 16. deposition
- 17. Rock
- 18. Nonliving
- 19. tremor
- 20. Erosion
Down
- 1. reciprocal
- 2. living
- 4. terrain
- 5. Convergent
- 6. Circulation
- 7. tectonic
- 8. Shield
- 12. Cardio
- 13. Airless
- 14. Polarity
