Opinion

... in response to Why do humans have an Appendix?
  1. Matthew Mackinnon Matthew Mackinnon Canada says:

    In the theory that ancestors were herbivores who used the appendix to break down hard to digest foods could it be possible that the appendix used to be used to store bacteria and create there own b12 like a caecum in some apes since it’s located in the same area between the small and large intestine

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