Across
- 3. To say that you will not do something that someone asks you to do
- 5. A substance used to keep people from getting sick
- 6. Small living things that can cause illness
- 8. Actions that stop something from happening
- 12. Something wrong with your body that shows you are sick
- 13. Small living things that can only be seen with a microscope
- 14. To figure out the facts or truth
- 15. To look carefully at something in order to learn more about it
Down
- 1. To make naturally
- 2. An action taken to stop something harmful from happening
- 4. To make someone sick
- 7. To provide proof that something is true
- 9. A tiny living thing that causes diseases
- 10. Things the body makes to fight disease
- 11. To take over and cause something to stop working