Why do humans have a third eyelid? - Dorsa Amir
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vestigial organs, vestigial structures, evolution, natural selection, darwin, science, biology, human body, third eyelid, appendix, tailbone, human evolution, wisdom teeth, evolutionary biology, charles darwin, on the origin of species, evolve, vestige, proof of evolution, vestigial trait, vestigial body parts, human tail, mammals, vestigial muscle, creationism, anthropology, animation, education, avi ofer, dorsa amir, TED, TED-Ed, TED Ed, Teded, Ted Education
