Across
- 3. Shallow body of water separated from a larger body of water by a barrier
- 9. Variety of living organisms found within an environment
- 11. Large, slow-moving mass of ice
- 12. Series of powerful ocean waves usually caused by underwater disturbances
- 14. Dense forest found in areas with high levels of rainfall
- 17. Gradual wearing away of rock or soil by wind, water or ice
- 18. Hot spring that periodically shoots water and steam into the air
- 20. Coastal area where freshwater from a river meets seawater
Down
- 1. Upper layer of branches and leaves in a forest
- 2. Natural home or environment of a plant or animal
- 4. Large mass of snow and ice that suddenly moves down a mountain
- 5. Marine organism that can form large underwater reefs
- 6. Cold, treeless region where the ground may remain permanently frozen
- 7. Community of living organisms interacting with their environment
- 8. Area of land that is permanently or seasonally covered with water
- 10. Opening in Earth's crust through which lava, ash and gases can escape
- 13. Tree or shrub adapted to grow in salty coastal waters
- 15. Long period with unusually little or no rainfall
- 16. Place where a river or stream drops over a steep edge
- 19. Dry region that receives very little rainfall