Across
- 4. in a different way
- 8. small
- 9. more flat
- 12. largest
- 15. at the back
- 16. in the end
- 17. taken away
- 18. bacteria and viruses
- 19. start
- 20. let
Down
- 1. have to
- 2. had an effect from
- 3. slowly
- 5. more small
- 6. made full
- 7. to make something happen
- 10. grinding with the teeth
- 11. parts
- 13. become bigger
- 14. without effort