Across
- 5. cycle with respiration,combustion, decomposition
- 6. complex diagram showing energy relationships
- 9. converting nitrate back to nitrogen gas
- 10. cycle that "fixes" an important element for DNA
- 11. source of energy for water cycle
Down
- 1. cycle the moves H2O from surface to atmosphere
- 2. organisms depend on the next as food source
- 3. man-made emissions that add CO2 to the air
- 4. type of plant that goes thru nitrogen fixation
- 7. bacteria and other that breakdown dead things
- 8. symbol used to show the transfer of energy