Across
- 2. burning of fuels
- 5. chemisal symbol H
- 7. smoke and fog
- 10. oxidation of ammonia to nitrite
- 12. breaking down of gluecose
- 13. conversion back to elemental nitrogen
- 17. chemisal symbol C
- 19. transfer of energy with no medium
- 21. chemisal symbol N
- 22. blanket around earth
- 24. chemisal symbol N3
- 25. chemisal symbol N2
Down
- 1. introduction of harmful materials into environment
- 3. chemisal symbol o3
- 4. ______ corrents are reradiated sun rays
- 6. degredation
- 8. living components in environment
- 9. chemisal symbol H2O
- 11. cloud near surface
- 14. elemental nitrogen to absorbable nitrogen
- 15. 1st layer of atmosphere
- 16. non living components of environment
- 18. chemisal symbo O
- 20. concertion do CO2 to gluecose
- 23. caused by uneven heating of air