Across
- 1. a climate type which is very dry
- 7. seasonal wind that bring either dry or moist air
- 9. spread of desert like conditions
- 12. influences climate, is a really hot ball of fire
- 13. tall; made of rock
- 14. permanent frozen layers of earth
- 17. planting trees to replace lost ones
- 19. materials in nature that people use
- 20. coldest climate zone
Down
- 2. plants and animals that depend on each other
- 3. mountain regions
- 4. water that warms Europe
- 5. air masses with different temperatures meet
- 6. place where a plant or animal lives
- 8. nonrenewable; formed from remains of plants and animals
- 10. dinosaurs are
- 11. resource that Earth replaces naturally
- 15. one side is green and lush the other is desert
- 16. short term changes in the air for a given place and time
- 18. decayed plant or animal matter