c8upceTawatkp
c8upceTawatkp c8upceTawatkp
  • 04-03-2016
  • Biology
contestada

What is the primary role of the respiratory system in living organisms?
a. to make carbon dioxide
b. to obtain oxygen
c. to use up nitrogen
d. to find hydrogen

Respuesta :

allanmcclellon1
allanmcclellon1 allanmcclellon1
  • 04-03-2016
b to obtain oxygen
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