Principles of Ecology

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Across
  1. 2. part of Earth where life exists
  2. 4. non-living
  3. 6. breaks down waste and dead organisms
  4. 7. factor in the environment that depends on the number of members in a population per unit area
  5. 10. Scientific study of interactions among organisms and between organisms and their environment
  6. 11. close relationship between two species
  7. 14. place where an organism lives
  8. 15. one organism benefits, one organism harmed
  9. 16. organism's role or job
  10. 18. group of ecosystems that share similar climates and organisms
  11. 19. An environmental factor that prevents a population from increasing
  12. 20. Number of individuals per unit area
  13. 21. Largest number of individuals of a population that a environment can support
Down
  1. 1. pattern of spacing among individuals
  2. 3. consumers other organisms for energy
  3. 5. total mass of living matter in a given unit area
  4. 7. affects all populations in similar ways, regardless of population size
  5. 8. movement of individuals into an area occupied by an existing population
  6. 9. make their own food
  7. 12. both organisms benefit
  8. 13. different populations living together in an area
  9. 17. movement of individuals out of an area
  10. 18. living