Arelationship in which one organisms benefits while the other is not harmed but does not benefit either is called predation. parasitism. commensalism. mutualism.

commensalism

Explanation:

The association of two organisms wherein one is benefited but the other organism is neither benefited nor harmed is called commensalism.

Example: The intestinal flora of human intestine include commensals that derive their nutrition from the unused food. Here, bacteria are benefited but there is no effect on the human.

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