Across
- 2. microorganism
- 3. epidemic
- 7. natural
- 9. unnatural
- 12. infectious
- 14. killer
- 16. malaria
- 17. given
- 19. spread
- 20. fighters
Down
- 1. single-celled
- 4. memory
- 5. soccer
- 6. enviroment
- 8. widespread
- 10. immune
- 11. not given
- 13. bacteria
- 15. public
- 18. protection