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What Do These Sacs Do? |
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Answer» They help PERFORM an incredible magic act. Your air sacs bring new oxygen from air you've BREATHED to your bloodstream. They exchange it for waste products, like carbon DIOXIDE, which the cells in your body have made and can't use. They help perform an incredible magic act. Your air sacs bring new oxygen from air you've breathed to your bloodstream. They exchange it for waste products, like carbon dioxide, which the cells in your body have made and can't use. |
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