vocab ch.12

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Across
  1. 2. A non-living (physically or chemically) component of the environment.
  2. 4. The total mass of living organisms.
  3. 7. Population growth that is constrained by biotic or abiotic factors such as competition or nutrients.
  4. 9. The sharing of resources by specialization.
  5. 11. Organisms that live on the bottom.
  6. 12. The bottom between the shelf break and a depth of approximately 4,000 m.
  7. 13. The elimination of one species by another as a result of competition.
  8. 14. Each of the steps in a food chain.
  9. 17. The pelagic environment beyond the shelf break.
  10. 18. Organisms that live in the water column, away from the bottom, including the plankton and nekton.
Down
  1. 1. Unrestricted population growth where the population grows at the faster rate with each successive generation.
  2. 3. an essential factor whose short supply limits the growth of a population.
  3. 5. The maximum population size that can be sustained by available resources in a given environment.
  4. 6. A living component of an environment.
  5. 8. The pelagic environment above the continental shelf.
  6. 10. The bottom from a depth of approximately 4,000 to 6,00 m.
  7. 15. The bottom below 6,000 m.
  8. 16. the study of the interactions between organisms and their environment.