While Climbing to a Mount Everest Base Camp You Find

question 188

Multiple Choice

While climbing to a Mount Everest base camp you find that you have less energy to climb the higher you go.The most likely reason for this is that

• A) your metabolic rate increases at higher altitudes.
• B) it is harder to get rid of CO₂ from your lungs at higher altitudes.
• C) there is a lower percentage of oxygen in the air at higher altitudes.
• D) it is more difficult for your blood to obtain oxygen from the air at higher altitudes.
• E) the partial pressure of oxygen in the air is higher at higher altitudes.

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