What is the path that oxygen follows in your repiratory system and the cardiovascular system?
The oxygen goes into you’re lungs and the blood cells get the rich oxygen, and the blood cells come back with the carbon dioxide,
What is the path that oxygen follows in your repiratory system and the cardiovascular system?
The oxygen goes into you’re lungs and the blood cells get the rich oxygen, and the blood cells come back with the carbon dioxide,
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