Nature of Ecosystems

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Across
  1. 5. along with bacteria, it shows the food for larger decomposers
  2. 6. feed on other animals
  3. 8. sedimentary cycle that consists of the movement of phosphorus from rocks to soil & sea
  4. 11. exemplified by the phosphorus cycle
  5. 12. both land and aquatic organisms exchange carbon dioxide with the atmosphere
  6. 13. feed on plants and animals:example. Humans
  7. 15. with every transformation some energy is degraded
  8. 16. exemplified by the carbon and nitrogen cycles
  9. 17. shows the aboveground plant material
  10. 18. a source from which organisms do normally take chemicals, such as the atmosphere
  11. 21. through which chemicals move along food chains, perhaps never entering an exchange pool
  12. 22. a source normally unavailable to producers such as fossilized remains, rocks, and deep-sea sediments
  13. 23. a community along with its physical and chemical environment.
Down
  1. 1. describes the continuous movement of water on and below the earths surface
  2. 2. feed on solely plants or algae
  3. 3. complicated relationships that exist in natural ecosystems
  4. 4. energy cannot be created or destroyed
  5. 7. producers take in inorganic nutrients from the environment
  6. 9. feed on other organisms
  7. 10. when producers absorb solar energy
  8. 14. feed on dead organic material in soil
  9. 19. make their own food
  10. 20. describes the continuous movement of nitrogen from atmosphere to the ground & sea