Across
- 3. converts carbon from once living things into a fuel source
- 5. individual member of a species
- 7. bacteria convert nitrogen in ammonia into atmospheric nitrogen
- 8. multiple individuals of the same species
- 10. plants capture carbon dioxide to create simple sugars
- 14. multiple populations of different species living together
- 15. some water seeps from the surface into underground aquifers
- 18. represent the movement of matter through an ecosystem
- 19. decomposers breakdown carbon from dead things
- 20. water rises into atmosphere as vapor from plants
- 21. this level recognizes multiple ecosystems
Down
- 1. water condenses to form clouds
- 2. carbon dioxide released into atmosphere from burning
- 4. sun heats liquid water to vapor
- 6. liquid water that collects in puddles, lakes, rivers, etc.
- 9. bacteria convert nitrogen from waste into ammonia
- 11. carbon dioxide released as waste
- 12. nitrogen in ammonia is converted into nitrites and nitrates
- 13. the study of relationships
- 16. bacteria "fix" nitrogen into forms that plants use
- 17. water falls to earth as a liquid