Across
- 4. providing or obtaining the food necessary for health
- 5. simple microorganism that infects cells and may cause disease
- 7. impure or polluted
- 9. common symptom for many diseases
Down
- 1. disease that is spread from one person to another
- 2. disease transported by mosquito
- 3. microorganisms that cause diseases
- 5. a treatment to strengthen our immunity
- 6. weakening of bones
- 8. damaging immune response by the body due to a substance