Across
- 3. the release of excess nutrients ( usually nitrogen) into a body of water; causes algae to grow excessively
- 5. the continual movement of an element, such as carbon or nitrogen, between Earth's organisms and the environment
- 8. process of converting carbon dioxide, water, and light energy to glucose and oxygen; part of the carbon cycle
- 9. the process in which bacteria change nitrogen gas into compounds that other organisms can use
- 10. the transformation of ammonia into nitrates and nitrites by bacteria
Down
- 1. the continuous movement of nitrogen through Earth's systems
- 2. process of converting glucose and oxygen into carbon dioxide, water, and chemical energy; part of the carbon cycle
- 4. the conversion of nitrates and ammonium molecules in soil back into nitrogen gas
- 6. burning, especially carbon-based material
- 7. the continuous movement of carbon through Earth's systems