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Relationships between organisms
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.