Across
- 3. The Romans built these to transport freshwater to highly populated areas.
- 5. A heart monitor invented by Willem Einthoven in the early 1900s
- 7. An organism that can be seen only through a microscope. Examples include bacteria, protozoa, algae, and fungi.
- 8. An unpleasant or unhealthy smell or vapour.
- 11. A substance used to stimulate the production of antibodies and provide immunity against a disease
- 12. a medicine that inhibits the growth of or destroys microorganisms
Down
- 1. Heating liquid or food to kill microorganisms
- 2. four humors The belief that the substances that make up the human body are: black bile, yellow bile, blood, and phlegm.
- 4. To give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease
- 6. scan a procedure that uses a computer linked to an x-ray machine to make a series of detailed pictures of ares inside the body
- 9. A substance that stops or slows down the growth of microorganisms
- 10. Protected against, not affected by a disease