Across
- 3. an animal that feeds on plants
- 6. name for nerve cells
- 7. an organism that cannot move from place to place
- 9. vessels that carries blood away from heart
- 12. chemicals used by some animals for communication
- 15. maximum number of chambers in a vertebrate heart
- 16. jellyfish have a ________ net
- 17. a behavior you are born with
Down
- 1. animals caught and eaten by other animals
- 2. a form of communication used by fireflies
- 4. elimination of waste from the body
- 5. body system that transports nutrients and gases
- 8. tough bands of tissue found on endoskeletons
- 10. digestion process that involves grinding food
- 11. movement from one place to another
- 13. vessels that connect veins and arteries
- 14. digestive system with two openings