 The nonliving parts of an organism’s environment

 All of the living organisms that inhabit an environment.

 An animal that eats only other animals.

 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

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

 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

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

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

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

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

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

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

 An animal that eats only plants.

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

 Both organisms are helped

 An animal that eats both plants and animals.

 One organism is helped  One organism is harmed

 One organism hunts and kills another organism for survival.

 A consumer that eats only producers (plants).

 Colonization of barren land by pioneer organisms

 Plants that produce their own food through photosynthesis.

 A consumer that eats primary consumers.

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

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

 Consumers that eat secondary consumers.

THE END