Across
- 4. hurricanes that bring heavy rain and flooding
- 5. multiple cultures in one society
- 10. Flat land found in the arctic and subarctic regions
- 11. permanently frozen ground
- 13. someone who takes up permanent residence in another country
- 17. protection of the environment
- 18. the height above sea level
- 20. a piece of land completely surrounded by water
Down
- 1. native to the region in which they are found
- 2. ring-shaped reef, islands, or chain of islands
- 3. nomadic tent for living
- 6. the way people live and act
- 7. an area where a river deposits sediments as it empties into a body of water
- 8. where everybody competes to make money
- 9. closely related group of islands
- 12. an economic system where wealth is distributed evenly to everybody
- 14. giant wave with enormous power
- 15. a piece of land almost surrounded by water or projecting out into a body of water
- 16. very large plains
- 19. continuous extinct of land