![](https://ib.bioninja.com.au/_Media/symbiosis_med.jpeg)
As you can see from the chart above, mutualism is when both species benefit. Commensalism is when one species benefits, and the other remains unaffected. Parasitism is when one species benefits, and the other is harmed.
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As you can see from the chart above, mutualism is when both species benefit. Commensalism is when one species benefits, and the other remains unaffected. Parasitism is when one species benefits, and the other is harmed.