Alveoli are small bubbles in your lungs that help you breathe; they take in oxygen from the air and send away carbon dioxide that your body doesn't need.
A simple explanation of alveoli for 6-year-old children, focusing on their role in breathing and exchanging gases.
Alveoli are small bubbles in your lungs that help you breathe; they take in oxygen from the air and send away carbon dioxide that your body doesn't need.
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