Chapter 12 Vocab

3. level/each of the steps in a food chain.
6. bottom from a depth of approximately 4,000 to 6,000.
9. Population growth that is constrained by biotic or abiotic factors such as competition or nutrient
10. Organisms that live on the bottom
11. A non-living component of the environment
13. pelagic environment above the shelf break
14. bottom between the shelf break and a depth of approximately 4,000 m
17. An essential factor whose short supply limits the growth of a population
18. bottom below 6,000 m

1. total mass of living organisms.
2. The maximum population size that can be sustained by the available resources in a given environment.
4. The elimination of one species by another as a result of competition
5. The sharing of resources by specialization
7. is the study of the interactions between organisms and their environment's
8. A living component of an environment.
12. pelagic environment above the continental shelf
15. Unrestricted population growth is where the population grows at a faster rate with each successive generation.
16. that live in the water column, away from the bottom, including plankton and nekton.