Chapter 20 Vocabulary Puzzle

3. relationship where one benefits and the other is harmed
8. any living thing
10. first to populate an area
12. relationship where at least one organism benefits
14. study of how organisms interact with their environment
16. largest population that an area can support
17. total of all the births in a population
18. total of the deaths in a population
20. factor that prevents a population from increasing
21. total of all the same species that lives in an area
22. succession that takes place in a disturbed area where soil and organisms still exist
23. nonliving factors in an organism's environment
24. relationship where both organisms benefit

1. moving into a population
2. one who is hunted and killed
3. succession that takes place where no soil or organisms exist
4. series of changes that occurs in a community over time
5. role of an organism in its environment
6. relationship where one benefits and the other is neither helped nor harmed
7. made up of all the different populations that lives in an area
9. place where an organism lives
10. number of individuals in an area of a specific size
11. leaving a population
13. living factors in an organism's environment
15. one who hunts and kills
16. struggle between organisms to survive as they try to use the same resource
19. made up of all the communities and nonliving features in an area
21. interaction where one organism kills another for food