Which of the following structures are found only in embryos that shows the relationship of humans to other species? Select one:

Lungs

Brains

Gills

Appendix

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.