human body - Biology Forum

last updated by

Poison 18 years, 8 months 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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