Asked by uh
                Why is it harder to breathe when climbing up a high mountain?(1 point)
The air compresses the lungs.
The air pressure increases.
The air is thinner.
The air has more moisture.
            
        The air compresses the lungs.
The air pressure increases.
The air is thinner.
The air has more moisture.
Answers
                    Answered by
            STEM Helper
            
    The air is thinner
Hope this helps!
    
Hope this helps!
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