Across
- 4. area of Earth between the Tropic of Cancer and the Tropic of Capricorn
- 7. area of Earth between the Tropic of Cancer and the Arctic Circle
- 10. ground layer of a forest
- 13. grasslands of South America
- 14. layer of forest containing shrubs and other short plants
- 15. transitional layer between two different ecosystems
- 19. forest in a tropical region receiving more than 80 inches of rain per year
- 20. another name for a specific coniferous forest region in the north
- 22. grasslands of Africa
- 23. top layer of a forest
- 25. tree with needle-like leaves that are not shed in autumn
- 26. tree with needle-like leaves that bear seeds in cones
- 27. ecosystem dominated by deciduous trees
- 28. change over time from one ecosystem to another
- 29. grasslands of North America
- 30. final, stable ecosystem
Down
- 1. area of Earth north of the Arctic circle
- 2. area of earth south of the Antarctic Circle
- 3. first plants to move to an area after drastic change
- 5. another name for a specific coniferous forest region in the north
- 6. climate with more rain than a desert but less rain than temperate areas
- 8. layer consisting of immature trees and shorter species
- 9. tree with broad, flat leaves that are shed in autumn
- 11. living life primarily between trees
- 12. ecosystem dominated by trees
- 16. ecosystem dominated by coniferous trees
- 17. area of earth between Tropic of Capricorn and the Antarctic Circle
- 18. layer of forest containing grass, flowers, and other small plants
- 21. roof of forest, formed by tops of mature trees
- 22. grasslands of Europe and Asia
- 24. ecosystem dominated by grass with few trees or shrubs
