Vestigial organs are body parts that have lost most or all of their original function over the course of evolution. • Appendix once helped in digesting cellulose in herbivores. • Coccyx (tailbone) is a remnant of a tail. • Eyelids, however, are fully functional and essential for protecting and moistening the eyes — so they are not vestigial.
Which one is not a vestigial organ of a Human being?
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