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:

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.