Once Upon a Time... Life 1x8
Season 1 · Episode 8
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Overview
Air bubbles travel from the nose to the lungs. In the swampy, mucus-filled areas, they meet the red blood cells that transport them around the body.
Season 1 · Episode 8
Air bubbles travel from the nose to the lungs. In the swampy, mucus-filled areas, they meet the red blood cells that transport them around the body.
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