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Outlines the types of relationships that exist between organisms in an ecosystem


Both organisms benefit from the relationship


One member of the association benefits and the other is unaffected


a relationship in which one organism is harmed and the other is unaffected


where two organisms fight for the same resource


one organism benefits while the other is harmed


One species kills the other for food


An organism lives in or on a host. The host suffers but usually does not die.

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