All of the Following Are Advantages of Gas Exchange in Air

question 20

Multiple Choice

All of the following are advantages of gas exchange in air, as compared to gas exchange in water, except:

• A) air is less dense than water.
• B) air contains a higher concentration of oxygen.
• C) less energy is needed to move air over a gas exchange surface.
• D) oxygen diffuses more slowly through air than water.
• E) air is less viscous than water.

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