Across
- 2. An organic molecule contains this element
- 3. An outer layer of cells for protection
- 4. A section of DNA that causes a trait
- 7. An organism that depends on others for food
- 10. A cell with membrane-bounded organelles
- 12. A chemical that provides toughness & flexibility
- 13. Vessels that carry blood away from heart
- 14. The soft tissue inside the bone the produces blood
- 15. An animal that does not have a backbone
Down
- 1. Process by which plants use energy of sun
- 5. Evaporation of water from plant leaves
- 6. Lacking internal body heat regulation
- 8. An organism that feeds on a living host
- 9. An animal that eats only plants
- 11. The end of an animal closest to the head