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From the nose and mouth, oxygen travels to the trachea, bronchi, bronchioles, and then into the alveoli.
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okay thanks :)
heonmaneyo it means youre welcome :)
The human body needs oxygen to sustain itself a decease in oxygen is known as hypoxia and a complete lack of oxygen is known as anoxia and according to medline plus these conditions can be fatal; after about four minutes without oxygen brain cells begin dying according to NYU langone medikal center which can lead to brain damage and ultimately death

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