Question

We cannot breathe properly at high altitudes. Why?

Answer 1

Answer:

The air at higher altitudes is colder, less dense, and contains fewer oxygen molecules. This means that you need to take more breaths in order to get the same amount of oxygen as you would at lower altitudes. The higher the elevation, the more difficult breathing becomes.

Explanation:

Answer 2

Answer:

air becomes thinner, O2 level decreases and pressure decreases also and low temperature

Explanation:

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