A vestigial structure is a structure that kind-of just "hangs out" in our bodies. We don't really need it, yet it is there. So, why is it there??? We probably needed it, for example, when we needed to digest plants. (Appendix) Some say that the appendix was used for digesting plants and berries, but it is really just speculation. We "evolved" to not need the appendix.
Here are some other vestigial examples: wisdom teeth, tail bone, pelvic bone in a snake, and wings on a flightless bird.
I hope this helped, if it did not let me know!!
I hope you have a fantastical day!!!XD
I think this would answer your question. I did this in school and I only got a few wrong....
<span>Creation of egg cells and production of estrogen and progesterone, I think but I'm pretty sure it would be easier if I could see the diagram.</span>
1. Alloy
Alloy is a mixture or metallic-solid solution composed of two or more elements.