Rapid Gas Exchange Can Be Accomplished More Easily in Air

question 25

Multiple Choice

Rapid gas exchange can be accomplished more easily in air than in water because

• A) the O₂ content of water is higher than that of air.
• B) the CO₂ content of water is higher than that of air.
• C) O₂ diffuses more rapidly in water than in air.
• D) water is more dense and viscous than air.
• E) more energy is required to move air than to move water.

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