Symbiosis

All the living and nonliving things in an area.

Interaction between organisms of two different species.

Relationship in which one organism eats another organism.

Relationship in which two organisms compete for the same resource.

Relationship in which one organism benefits and the other is harmed.

Relationship in which both of the organisms benefit.

Relationship in which one organism benefits and the other organism is neither helped nor harmed.

Model showing where each organism in an ecosystem gets its energy.