Across
- 2. chemical and physical factors
- 3. down dead organic matter
- 5. look at cells
- 6. upon which an enzyme has its action
- 8. only on dead
- 10. cells working together
- 11. tissue working together
- 12. own food
- 16. hands
- 17. with a nucleus
- 18. for eye protection
- 19. cycle- converts nitrogen gas into unusable forms
- 20. with no nucleus
Down
- 1. organisms live
- 4. nutrients from others
- 7. preys on other organisms
- 9. hunt them
- 13. eats plants
- 14. organisms living and interacting in an environment
- 15. from spilled