Why appendix has lost his function with time ???
Please refer the link below for a similar query:
https://www.meritnation.com/ask-answer/question/what-was-the-function-of-vermiform-appendix-in-our-ancestors/evolution/8100145
https://www.meritnation.com/ask-answer/question/what-was-the-function-of-vermiform-appendix-in-our-ancestors/evolution/8100145