Across
- 3. a introduced organism
- 7. restrained by another
- 8. losing resources
- 10. the study of life
- 14. trashing an area
- 15. when an organism is gone from the world
- 16. organized into sections
Down
- 1. on the side
- 2. conservation technique
- 4. being able to keep up supply
- 5. when a ecosystem is broken up
- 6. opposite of base
- 9. where an organism lives
- 11. the oxygen atoms bound together
- 12. area that is set aside
- 13. branches, grass, organism bodies