Ecology

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Across
  1. 3. how a population's initial exponential increase is slowed and finally stopped by limiting factors.
  2. 6. population increases by a fixed percentage each year.
  3. 7. all of the living things and their physical environments within a particular area.
  4. 8. group of individuals that interbreed and produce fertile offspring.
  5. 11. Parts of an ecosystem that are living or used to be living.
  6. 13. Limiting factors whose influence is not affected by population density.
  7. 15. study of how organisms interact with each other and their environments.
  8. 17. Proportion of males to females.
  9. 18. specific environment in which an organism lives.
  10. 19. number of individuals in a population per unit of area.
  11. 21. Parts of an ecosystem that have never been living.
  12. 23. How the likelihood of death varies with age.
Down
  1. 1. Organisms influence changes with population density.
  2. 2. largest population size a given environment can sustainably support.
  3. 4. maximum ability to produce offspring in ideal conditions.
  4. 5. Organisms are arranged within an area
  5. 9. Characteristics of the environment that limit population growth.
  6. 10. arrival of individuals from outside a given area.
  7. 12. anything an organism needs.
  8. 14. Relative numbers of organisms of each age within a population.
  9. 15. departure of individuals from a given area.
  10. 16. number of individual organisms present in a population at a given time.
  11. 20. populations in a particular area.
  12. 22. seasonal movement into and out of an area.