Across
- 4. Breaks down dead organisms
- 5. State of balance
- 6. The amount of organisms a ecosystem
- 8. both organisms benefit
- 9. Organism that makes its own food
- 11. A living factor
- 12. one organism benefits the other is harmed
Down
- 1. one organism benefits the other is fine
- 2. biology branch deals with organism relationship
- 3. something that comes natural
- 7. A non living factor
- 10. Organism that eats other organisms