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The pelvis bone functions as an attachment point for legs. So, the pelvis bone found in dolphins is organ. Information about this organ tells us that

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Answer:

Explanation:

Answer 1 will be vestigial and answer 2 will be dolphins evolved from organisms with legs. Vestigial organs are those which are not in use but were once used by our ancestors for example an appendix

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Answer:

vestigial and dolphins evolved from organisms with legs

Explanation:

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