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PLEASE HELP!! Which of these is necessary for gas exchange in the respiratory system? a.At least 30% oxygen in the air b.The exchange surface must be moist c.The air must be coo…

PLEASE HELP!! Which of these is necessary for gas exchange in the respiratory system? a.At least 30% oxygen in the air b.The exchange surface must be moist c.The air must be coo…
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PLEASE HELP!!

Which of these is necessary for gas exchange in the respiratory system?
a.At least 30% oxygen in the air
b.The exchange surface must be moist c.The air must be cooler than body temperature
d.The blood cannot be moving ​

User Pinxue
by
7.4k points

1 Answer

2 votes
Most likely A only because your respiratory system needs oxygen
User Ed Brannin
by
8.7k points
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