Question

Why is it harder to breathe when climbing up a high mountain?(1 point)

Responses

The air pressure increases.
The air pressure increases.

The air has more moisture.
The air has more moisture.

The air compresses the lungs.
The air compresses the lungs.

The air is thinner.
The air is thinner.

Answer 1

[AI-generated answer — Bot GPT 3.5]

The air is thinner.