Ecosystems and Biogeochemical

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Across
  1. 9. Organisms that decompose dead organic matter
  2. 11. Organisms that feed on both plants and animals
  3. 12. Levels of energy transfer in a food chain
  4. 15. Third level consumers in a food chain
  5. 16. Communities of living organisms
  6. 18. Organisms that consume other organisms for energy
  7. 19. Process of converting sunlight into energy
  8. 20. Organisms that produce their own food
Down
  1. 1. Organisms that obtain energy from inorganic compounds
  2. 2. Organisms that feed on primary consumers
  3. 3. Organisms that break down dead organic matter
  4. 4. Conversion of ammonia into nitrite and nitrate
  5. 5. Breakdown of organic matter by bacteria and fungi
  6. 6. Initial stage of ecological succession
  7. 7. Organism that feeds on dead plant and animal matter
  8. 8. Total mass of living organisms in a given area
  9. 10. Process of converting nitrogen into ammonia
  10. 13. Organisms that consume producers
  11. 14. Organisms that produce organic compounds using energy from sunlight
  12. 17. Second level consumers in a food chain