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  • 04-03-2019
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When do your lungs inflate?

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coolkid021905
coolkid021905 coolkid021905
  • 04-03-2019

When you breathe in oxygen

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percypercy168otvzio
percypercy168otvzio percypercy168otvzio
  • 04-03-2019

When you inhale air from your mouth or nostrils

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