It is harder to breathe when climbing up a high mountain because the air is thinner. At higher altitudes, there is less oxygen available in the air, making it more difficult for the lungs to take in enough oxygen for the body’s needs.
Why is it harder to breathe when climbing up a high mountain?(1 point) Responses The air compresses the lungs. The air compresses the lungs. The air pressure increases. The air pressure increases. The air is thinner. The air is thinner. The air has more moisture.
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