Chapter 20 Vocabulary Puzzle

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Across
  1. 3. relationship where one benefits and the other is harmed
  2. 8. any living thing
  3. 10. first to populate an area
  4. 12. relationship where at least one organism benefits
  5. 14. study of how organisms interact with their environment
  6. 16. largest population that an area can support
  7. 17. total of all the births in a population
  8. 18. total of the deaths in a population
  9. 20. factor that prevents a population from increasing
  10. 21. total of all the same species that lives in an area
  11. 22. succession that takes place in a disturbed area where soil and organisms still exist
  12. 23. nonliving factors in an organism's environment
  13. 24. relationship where both organisms benefit
Down
  1. 1. moving into a population
  2. 2. one who is hunted and killed
  3. 3. succession that takes place where no soil or organisms exist
  4. 4. series of changes that occurs in a community over time
  5. 5. role of an organism in its environment
  6. 6. relationship where one benefits and the other is neither helped nor harmed
  7. 7. made up of all the different populations that lives in an area
  8. 9. place where an organism lives
  9. 10. number of individuals in an area of a specific size
  10. 11. leaving a population
  11. 13. living factors in an organism's environment
  12. 15. one who hunts and kills
  13. 16. struggle between organisms to survive as they try to use the same resource
  14. 19. made up of all the communities and nonliving features in an area
  15. 21. interaction where one organism kills another for food