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CR
Carbon and Nitrogen Cycle
23
Sunlight
Photosynthesis
Decay
Organic carbon
Fossils
Fossil fuels
Dead organisms
Waste
Ocean
Root respiration
Animal respiration
Plant respiration
Auto and factory emissions
Lightning fixation
Organic matter
Precipitation
Bacteria fixation
Denitrifying bacteria
Nitrification
Atmospheric nitrogen
Fertilizers
Decomposers
Soil
Nitrogen
Greenhouse
Carbon
Carbon and Nitrogen Cycle
Across:1. | | 3. | | 6. | | 8. | | 9. | | 13. | | 14. | | 16. | | 19. | | 20. | | 21. | | 22. | |
| | Down:2. | | 4. | | 5. | | 7. | | 8. | | 10. | | 11. | | 12. | | 15. | | 17. | | 18. | |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only
Carbon and Nitrogen Cycle
Across:1. | | 3. | | 6. | | 8. | | 9. | | 13. | | 14. | | 16. | | 19. | | 20. | | 21. | | 22. | |
| | Down:2. | | 4. | | 5. | | 7. | | 8. | | 10. | | 11. | | 12. | | 15. | | 17. | | 18. | |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only