Across
- 4. destroying microorganisms with heat
- 5. Keeping clean
- 7. world health organization
- 9. Greek word for Hygiene
- 10. a food plan
- 11. a natural calamity.....
- 12. Injurious to health
- 13. Special defense cells
Down
- 1. TB
- 2. Mental, physical and social
- 3. Disease causing agent
- 4. substances that cause pollution
- 6. Physical activity for the body
- 8. affect water life