Ecosystem/Ecology Crossword Puzzle

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Across
  1. 3. The first organism in a food chain
  2. 6. a relationship between two organism
  3. 9. Organism that uses energy from the sun to make its own food
  4. 10. water from the earth's surface entering the atmosphere and becoming water vapor
  5. 14. limits the population growth of a large population
  6. 16. A organism that eats producers and other consumers
  7. 18. Where a organism lives and its role in its environment
  8. 20. cycle that involves an element that is used to make amino acids and nucleic acids
  9. 23. the maximum number of species in a environment
  10. 24. breaks down complex molecules and recycles and returns the material to the soil
  11. 25. balance of biotic and abiotic factors in a ecosystem
Down
  1. 1. the cycle that involves a element that does not enter the atmosphere
  2. 2. Non-living factors of an ecosystem
  3. 4. limits the population growth of any population
  4. 5. flows in one direction throughout an ecosystem
  5. 7. the largest ecosystem on earth that includes all life on earth
  6. 8. symbiotic relationship in which the symbiote benefits and the host is unaffected
  7. 11. A variety of different organisms in a ecosystem
  8. 12. Living parts of a ecosystem
  9. 13. the process of bacteria return nitrogen back to the earth's surface
  10. 15. environment
  11. 17. Where a organism lives
  12. 19. recycled through an ecosystem
  13. 21. study of interactions between organisms and
  14. 22. lowest level of the ecosystem