Across
- 5. The study of the causes of diseases.
- 6. Small tubes in the lungs that carry air to the alveoli.
- 8. Medicine that kills bacteria or stops their growth.
- 13. A natural oil used to make fuel and other products.
- 15. Medical care for animals.
- 16. A condition that makes people, animals, or plants unhealthy.
- 17. Relating to the heart and blood vessels.
- 20. Growing crops and raising animals for food and other products.
Down
- 1. The number of breaths a person or animal takes per minute.
- 2. The study of fish.
- 3. The blood vessel that carries blood from the lungs back to the heart.
- 4. Large tubes that carry air from the trachea into the lungs.
- 7. Tiny air sacs in the lungs where oxygen enters the blood.
- 9. The blood vessel that carries blood from the heart to the lungs.
- 10. Tiny living organisms that can be helpful or harmful.
- 11. The amount of blood the heart pumps in one beat.
- 12. Organs that help you breathe by taking in oxygen and releasing carbon dioxide.
- 14. Anything related to the heart.
- 18. Products made from milk, like cheese, yogurt, and butter.
- 19. A tiny organism that can make you sick by invading cells.