Nature of Ecosystems

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Across
  1. 4. a source normally unavailable to producers such as fossilized remains, rocks, and deep-sea sediments
  2. 6. feed on other organisms
  3. 8. exemplified by the carbon and nitrogen cycles
  4. 10. feed on dead organic material in soil
  5. 12. feed on plants and animals:example. Humans
  6. 14. producers take in inorganic nutrients from the environment
  7. 17. describes the continuous movement of nitrogen from atmosphere to the ground & sea
  8. 18. a community along with its physical and chemical environment.
  9. 19. complicated relationships that exist in natural ecosystems
Down
  1. 1. feed on other animals
  2. 2. make their own food
  3. 3. when producers absorb solar energy
  4. 5. sedimentary cycle that consists of the movement of phosphorus from rocks to soil & sea
  5. 7. exemplified by the phosphorus cycle
  6. 9. through which chemicals move along food chains, perhaps never entering an exchange pool
  7. 11. a source from which organisms do normally take chemicals, such as the atmosphere
  8. 13. describes the continuous movement of water on and below the earths surface
  9. 15. both land and aquatic organisms exchange carbon dioxide with the atmosphere
  10. 16. feed on solely plants or algae