Biology Forum › Human Biology › human body

last updated by Poison 18 years, 1 month ago
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    • March 8, 2006 at 9:36 am #3942
      bbowy2
      Participant

      !! HELP URGENT !!

      our class has to answer these questions
      how does the air get filtered ?

      how does the air get to the lungs ?

      what gases does the body need ?

      how does the gas we need get to the parts we need it?

      Please help
      it’s urgent

    • March 8, 2006 at 5:35 pm #42798
      Poison
      Participant

      Do your homework please. Those are not hard questions.

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