1) Both organisms benefit from each other. a) b) c) d) 2) One organism benefits while the other organism is neither benefited nor harmed. a) b) c) d) 3) One organism benefits and the other one is harmed. a) b) c) d) 4) One organism feeding on another. a) b) c) d) 5) Organisms compete for resources. a) b) c) d)

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