Across
- 3. A group of bacteria growing in a Petri dish
- 4. A food product obtained from animals
- 5. Hygiene and cleanliness rules
- 7. An instrument used to see very small things
- 8. The process of changing a product using microorganisms
- 10. The process of a product being polluted by microbes
Down
- 1. The process of checking the quality of a product
- 2. Heating milk or other products to make them safe
- 6. Very small microorganisms
- 9. A food product obtained from the body of animals
