Across
- 3. sewage
- 5. discussiëren to debate
- 6. conspiracy
- 10. (bij) to engage (in)
- 13. respiratory system
- 15. suffocation
- 17. awareness
- 19. op straat gooien to litter
- 21. houden to monitor
- 22. conference
Down
- 1. proposal
- 2. influential
- 4. precaution
- 7. congestion
- 8. to contaminate
- 9. ondertekenen to sign a petition
- 11. crop burning
- 12. to maintain
- 14. mist; smog smog
- 16. emission
- 18. policy
- 20. tol eisen to take its toll