: One species benefits from the interaction, and the other species is neither helped nor harmedExample: Egrets rely on cows to stir up dirt and bring food to the surface, but cows do not benefit.

This interaction is commensalism: one species benefits while the other is neither helped nor harmed. The egrets get easier access to food when cows stir up the dirt, while the cows are unaffected, so the correct choice is Commensalism.

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