Across
- 3. heating liquid or food to kill microorganisms.
- 8. protected against, not affected by a disease.
- 9. a heart monitor invented by Willem Einthoven in the early 1900's.
- 10. The Romans built these to transport fresh water to highly populated areas.
Down
- 1. a substance that stops or slows down the growth of microorganisms.
- 2. the belief that the substances that make up the human body are:black bile,yellow bile,blood and phlegm.
- 4. Medicines that treat infections by killing bacteria.
- 5. An unpleasent or unhealthy smell or vapour.
- 6. to give a weak form of a disease to a person or animal, usually by injection, as a protection against that disease.
- 7. An organism that can only be seen only through a microscope. examples include bacteria,protozoa,algae, and fungi.