Across
- 1. keeping clean to avoid sickness
- 4. able to be spread
- 5. human contact
- 7. a life form that can only be seen with a microscope
- 8. a "child" of a living thing
- 9. help immune system [protect agains disease
- 13. cannot be spread
- 14. a tiny living thing that causes disease
Down
- 2. a outbreak of sickness that spreads rapidly
- 3. the study of small living things
- 6. a tiny reproductive body made up of one or many cells
- 10. a sickness effecting vast areas
- 11. a organism that carries disease
- 12. the total number of things living in a certain place
- 15. a cell a virus infects to make copies of itself