ehjay7377 ehjay7377
  • 22-03-2018
  • Biology
contestada

The main function of the human respiratory system is to

Question 4 options:

A. Produce carbon dioxide as a waste product.


B. Obtain oxygen out of the atmosphere.


C. Remove nitrogenous waste from the blood

Respuesta :

budwilkins
budwilkins budwilkins
  • 26-03-2018
B. Obtain oxygen out of the atmosphere.
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