WILL FAN AND MEDAL FOR BEST HELP!!!
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
Ok, im super confused. i know it is most likely B, but i think it could be A.....

Question

WILL FAN AND MEDAL FOR BEST HELP!!!
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
Ok, im super confused. i know it is most likely B, but i think it could be A.....

anonymous · Answer

i think B

anonymous · Answer

yea. but our body also needs to make carbon dioxide right? or is it that we need to get rid of it?

anonymous · Answer

ok im just gonna try B

anonymous · Answer

ok sorry still getting used to this.yes we get rid of carbon dioxide

matt101 · Answer

The answer is 100% option B.

Your respiratory system does not MAKE CO2, it only excretes it. Every cell in your body produces CO2 as a by product of cellular respiration (the main energy-producing process in cells).

anonymous · Answer

K12? B... You might want to close the question now.