Wednesday, January 5, 2011

Question #116: spit.

Where does saliva come from? It seems like it just...appears...
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2 comments:

  1. CailynJanuary 7, 2011 at 7:43 PM

    ew...

    ReplyDelete
  2. AnonymousApril 21, 2011 at 7:39 AM

    That I can answer. Sort of, not really but I'll give it a shot. I'm guessing from all the water we can drink.

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