Ecology - Alain Civil

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Across
  1. 3. The first species to live in an are
  2. 5. The series of changes that occur after a disturbance of an existing ecosystem
  3. 6. The position an organism occupies on a food chain
  4. 13. The many different species that live together in a habitat
  5. 15. Graphic model of energy flow in a community
  6. 16. Organisms that eat both autotrophs and heterotrophs
  7. 18. the flow of water throughout the world
  8. 19. Heterotroph, organisms that cannot produce their own food; feed off of others
  9. 23. Relationship where one organism is harmed the other benefits
  10. 25. Occurs when the individuals in a population reproduce at a constant rate
  11. 26. Regions of the world with similar climate, plants, and animals
  12. 27. the amount of different species in an area
  13. 28. All possible feeding relationships in an ecosystem
  14. 29. Organisms that feed only on meat
Down
  1. 1. Organisms that feed only on producers
  2. 2. The series of changes that occur in an area where no ecosystem previously existed
  3. 4. Relationship where one organism benefits the other neither benefits nor is harmed
  4. 7. all living and nonliving things that live in ecosystem
  5. 8. One path of energy flow in an environment
  6. 9. Autotrophs, the basis of any food chain
  7. 10. The study of interactions between organisms and their environment
  8. 11. The annual rainfall in an area
  9. 12. Role an organism plays in an ecosystem Biotic and abiotic factors in a given area
  10. 14. Living factors in the environment
  11. 17. Cooperative relationship where both organisms benefit
  12. 20. Close interactions between species
  13. 21. Organisms that hunt down prey for food
  14. 22. Nonliving factors in the environment
  15. 24. Organisms that breakdown dead organic material
  16. 26. Biological material derived from living or once living organisms; resources for making energy