Ecology Part 1

2. plants that produce food for other organisms.
5. a nonliving part of an ecosystem that shapes its environment.
7. an organism that consumes prey as its food source in an environment.
9. the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans.
13. a food source for predators in an environment.
17. a nonnative organism that spreads or expand from its original place which can harm the environment,the economy, or human health.
19. a graphical representation of the energy found within the trophic levels of an ecosystem.
20. a living organism that shapes its environment.

1. a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
3. organism on the food chain that depends on autotrophs (producers) or other consumers for food, nutrition, and energy.
4. an equilibrium between the availability of habitat and the number of animals of a given species the habitat can support over time.
6. the direct or indirect interaction of organisms that leads to a change in fitness when the organisms share the same resource.
8. The conversion of one form of energy into another, or the movement of energy from one place to another.
10. the biological variation that occurs within species.
11. the mass or weight of living tissue,
12. only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next.
14. the different kinds of life/organisms you'll find in one area.
15. anything that constrains a population's size and slows or stops it from growing.
16. a place where an organism makes its home.
18. a detailed description of the species within a community and their relationships with each other.