Ecology

4. the changes in energy that occur between organisms within an ecosystem
5. an animal that is naturally hunted
9. a succession of organisms that eat other organisms and may, in turn, be eaten themselves
11. the variety of life in the world or in a particular habitat or ecosystem
12. organisms that produce food for themselves and other organisms
13. states that each trophic level can only give 10% of its energy to the next level
14. a living organism that shapes its environment
17. Something that restrains a population's size and slows or stops it from growing
19. the range of different inherited traits within a species
20. an organism that cannot produce its own food and must eat other plants and/or animals to get energy. Can be primary, secondary, tertiary, and quaternary.

1. biomass is renewable organic material that comes from plants and animals
2. a graphical representation of the energy found within the trophic levels of an ecosystem
3. an animal that naturally hunts others
6. an introduced,nonnative organism that begins to spread or expand its range from the site of its original introduction and that has the potential to cause harm to the environment
7. a situation in an ecosystem where two species require the same thing (like food or territory)
8. a system of interlocking and interdependent food chains
10. the number of organisms an area can support
15. the various steps in a food chain or ecological pyramid, at which the transfer of food (or energy) takes place from one organism to another organism
16. the natural home or environment of an animal, plant, or other organism
18. a non-living part of an ecosystem that shapes its environment