Organisms and their environment

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Across
  1. 4. A horizontal bar diagram that shows the relationship between food and energy.
  2. 5. Organisms that feed on primary consumers.
  3. 8. A network of interconnected food chains.
  4. 10. Processes where nitrogen is constantly removed from the soil and is eventually returned to it in the form of nitrates.
  5. 11. Organisms of the same species living together in a common habitat.
  6. 12. Organisms that cannot make their own food.
  7. 13. Processes where carbon, in the form of carbon dioxide, is removed from and released into the environment.
  8. 15. Allows a person to compare the mass of organisms present in each trophic level at a particular time.
  9. 16. Organisms that get their energy by breaking down dead organisms.
  10. 17. Position of an organism in a food web, food chain or ecological pyramid.
  11. 18. Study of organisms continually interacting with each other and their surroundings.
  12. 20. An organism that makes its own food.
  13. 21. Allows a person to compare the total energy in each trophic level of a food chain over a certain period of time.
  14. 22. The place where an organism resides.
Down
  1. 1. Organisms that feed on tertiary consumers.
  2. 2. Allows a person to compare the number of organisms present in each trophic level at a particular time.
  3. 3. Energy and nutrients being transferred through a series of organisms. (Starts with producer)
  4. 6. Organisms that live in a community and interact with each other and its environment.
  5. 7. Organisms that feed on secondary consumers.
  6. 9. When the relative size of different populations remains constant.
  7. 14. Organisms that are herbivores.
  8. 19. Different populations of different species in a habitat living and interacting with one another.