Across
- 5. Related to Earth's plates
- 8. Extremely dry
- 9. Layers of rock
- 10. River sediment deposit
- 12. Long narrow elevation
- 14. Low area of land
- 16. Cold forest biome
- 17. Tropical plant in Asia
- 19. Place for mining rocks
- 21. Deep river valley
- 23. Narrow sand formation
- 25. Elevated terrain
- 27. Tropical grassland biome
- 29. Large flat expanse
- 30. Broad coastal curve
Down
- 1. Small bay or inlet
- 2. Mountain's lower slope
- 3. Eroded barren land
- 4. Spanish for mountains
- 6. Small volcanic rock
- 7. Wetland region
- 11. Isolated flat-topped hill
- 13. Coastal shallow lake
- 15. Ridge formed by glacial streams
- 18. Low land between hills
- 20. Boggy or swampy land
- 22. Sandy beach
- 24. Grassland in North America
- 26. Small rounded hill
- 28. Submerged ridge of sand