Across
- 3. Keeping the surroundings
- 5. A chemical liquid that destroys bacteria
- 7. Rubbish or waste
- 9. To make something impure or unsuitable
- 10. A very small organism that causes a disease
Down
- 1. An illness
- 2. When another organism enters your body
- 4. Unavoidable danger
- 6. A chemical substance for removing dirt
- 8. Getting rid of by throwing away