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The air travels down into your lungs and into small air pockets called capillary The air is then transferred through the capillary as they are really thin. Oxygen from the air is taken in and used around the body and the excess carbon dioxide is breathed back out as t is not needed in the body.

You lungs also get bigger as you take a breathe, this creates a larger surface area as the chest goes out. The chest gets smaller as you breathe out as your lungs relax.

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15y ago

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