2.  The nonliving parts of an organism’s environment

3.  All of the living organisms that inhabit an environment.

4.  An animal that eats only other animals.

5.  The number of organisms of one species that an environment can support indefinitely  Populations below carrying capacity tend to increase  Populations above carrying capacity tend to decrease

6.  One organism is helped  The other organism is not affected

7.  the struggle between individuals of the same or different species for food, space, light, etc, when these are inadequate to supply the needs of all

8.  Organisms that cannot make their own food and must digest or absorb nutrients from another organism.

9.  An organism, such as fungi or bacteria that break down and absorb nutrients from dead organisms.

10.  An organism that uses organic waste as a food source.

11.  A model to represent the flow of energy in ecosystems. producers Primary consumers S econdary consumers

12.  Orderly, natural changes, and species replacements that take place in communities of an ecosystem over time.

13.  Models that show all of the possible feeding relationships at each trophic level in a community.

14.  An animal that eats only plants.

15.  Any biotic or abiotic factor that restricts the existence, numbers, reproduction or distribution of organisms.

16.  Both organisms are helped

17.  An animal that eats both plants and animals.

18.  One organism is helped  One organism is harmed

19.  One organism hunts and kills another organism for survival.

20.  A consumer that eats only producers (plants).

21.  Colonization of barren land by pioneer organisms

22.  Plants that produce their own food through photosynthesis.

23.  A consumer that eats primary consumers.

24.  Sequence of changes that takes place after a community is disrupted by natural disasters or human actions.

25.  A permanent, close relationship between two or more organisms of different species.

26.  Consumers that eat secondary consumers.

27. THE END