Biology

The correct answer is:

A.In commensalism, one species benefits while the other is unharmed; in mutualism, both species benefit.

Explanation:

1.Commensalism: In a commensal relationship, one species benefits from the interaction, but the other species is neither helped nor harmed. The second species is unaffected by the interaction.

Example: Birds (like egrets) that feed on insects stirred up by cattle. The egrets benefit from the easy food source, but the cattle are unaffected.

2.Mutualism: In a mutualistic relationship, both species benefit from the interaction.

Example: Bees and flowers. Bees get nectar from flowers (which they use for food), while flowers are pollinated by the bees, helping them reproduce.

Why the other options don't apply:

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