Across
- 2. Harmful material in nature
- 4. Salt and Fresh
- 5. Water ecosystem
- 6. starts after destruction
- 8. Ecosystem can't support
- 9. Heat change in avg. Temp
- 11. Collection of ecosystems
- 13. Food interactions
- 17. Pocket ecosystem
- 18. No sunlight
- 20. result of succession
- 21. Usual pioneer species
Down
- 1. starts from nothing
- 3. Measurement of variety
- 7. clearing forest
- 10. First species
- 12. Non-native
- 14. Isolated species
- 15. Maintains stability
- 16. Water region w/ sunlight
- 19. (it won't show 20 unless I put a 21st T-T)