Across
- 4. A relationship in which one organism
- 6. Multiple different linked food chains.
- 7. Organisms that make their own food
- 11. surroundings.
- 12. while the other is harmed.
- 13. A relationship in which both organisms
Down
- 1. An organism that eats another.
- 2. The environment of an organism.
- 3. forms of animals and their
- 4. An organism that is eaten by another
- 5. Organisms that have to eat to gain energy.
- 8. The study of the relationships between
- 9. A relationship in which one organism
- 10. and the other isn't affected.