8. How is the tailbone of humans a vestigial structure and what can it tell us about our evolutionary history?

The tailbone is a vestigal structure because it is no longer needed and is useless, like your appendix. And it can tell our evoluntionary history because at one poiint, our ancestors or whomever we descended from used a tailbone.

Explanation:

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the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )