ana333
ana333
19-05-2016
Biology
contestada
which organ systems help deliver oxygen to body cells
Respuesta :
emelem
emelem
19-05-2016
Respiratory and the circulatory.
The respiratory system allows gas exchange to occur at the lungs, swapping CO2 for O2.
This O2 is then picked up by the blood travelling through the circulatory system, allowing it to be delivered to the cells.
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