Ch. 1 Populations and Communities Vocab

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Across
  1. 1. The first species to populate an area during succession.
  2. 4. The series of predictable changes that occur in a community over time.
  3. 6. Succession The series of changes that occur in an area where no soil or organisms exist.
  4. 10. All the different populations that live together in a particular area.
  5. 11. Movement of individuals out of a population's area.
  6. 12. Movement of individuals into a population's area.
  7. 13. Succession The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist.
  8. 15. The number of births per 1,000 individuals for a certain time period.
  9. 16. An interaction in which one organism kills another for food or nutrients.
  10. 18. A type of symbiosis in which both species benefit from living together.
  11. 20. All members of one species living in the same area.
  12. 21. The organism that benefits by living with, on, or in a host and a parasitism interaction.
  13. 24. An organism that is killed and eaten by another organism in a predation interaction.
  14. 25. The community of organisms that live in a particular area, along with their nonliving environment.
  15. 27. An environment that provides the things a specific organism needs to live, grow, and reproduce.
  16. 28. A living thing.
  17. 29. A living or once living part of an organism's habitat.
  18. 32. The number of individuals in an area of a specific size.
Down
  1. 2. The study of how organisms interact with each other and their environment.
  2. 3. The organism that does the killing in a predation interaction.
  3. 5. Any relationship in which two species live closely together and that benefits at least one of the species.
  4. 6. A type of symbiosis in which one organism lives with, on, or in a host and harms it.
  5. 7. The largest population that a particular environment can support.
  6. 8. A nonliving part of an organism's habitat.
  7. 9. An organism that a parasite lives with, in, or on, and provides a source of energy or a suitable environment for the parasite to live.
  8. 14. The number of deaths per 1,000 individuals for a certain time period.
  9. 17. How an organism makes its living and interacts with the biotic and abiotic factors in its habitat.
  10. 19. The struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time.
  11. 22. An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.
  12. 23. A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
  13. 26. A type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed.
  14. 30. The process by which organisms that are best adapted to their environment are most likely to survive and reproduce.
  15. 31. An environmental factor that causes a population to decrease in size.