Across
- 3. the body system that fights disease is the _____ system.
- 4. a disease caused by bacteria.
- 6. change what you eat into substances your body can use.
- 8. small pieces of organic material that cause illness
- 10. enter by force and large numbers
- 11. preventive medicine, administer a vaccine.
- 13. illness, failed health
Down
- 1. very very tiny organisms that often causes illness
- 2. medicine that kills bacteria
- 5. painful because of illness or too much use
- 7. keep someone or something safe
- 9. physical or mental indicator of illness
- 12. smallest unit of life