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

26-03-2018

B. Obtain oxygen out of the atmosphere.

Answer Link

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