Across
- 4. Informal word for microbes
- 6. Tool used to see very small objects or organisms
Down
- 1. Some of them can make bread rise
- 2. Tiny living things found almost everywhere
- 3. Single-celled organisms that can move and feed on other tiny organisms
- 5. Extremely small agents that need a host to survive and can cause disease
- 7. Not healthy / ill