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Oxygen molecules path
Air enters the nose. Dust and other particles get caught on the hairs.
Then it moves to the treachea.As it moves down the trachea it makes its way to the lungs
Without the lungs the oxygen molecule would never have entered our bodies
Lungs are a pair of organs located in our chests.
Then the molecule moves to the bronchi
As the molecule moves into the bronchi, the lungs start to expand.
Then it moves into the bronchioles
Bronchioles are smaller tubes that branch of the bronchi
Then it moves into the aveoli.Where it is separated and carbon dioxide enters the blood.
Now oxygen will come out of the body the same way it came in, but as carbon dioxide.
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