swintavaleyjay
swintavaleyjay swintavaleyjay
  • 26-05-2016
  • Biology
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Air is forced into the lungs by the contraction of thea. alveoli.c. diaphragm.b. bronchioles.d. heart.

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Bagle
Bagle Bagle
  • 26-05-2016
I think the answers Diaphragm
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