The atmosphere gets thinner the higher you climb, which is why oxygen tanks are used by climbers scaling Mount Everest.
elevation
altitude
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elevation
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altitude
When the ozone layer gets thinner, its power becomes low. It causes the UV to penetrate it.
the air gets thinner.
The Earth's atmosphere gets thinner and thinner as we go away from the earth. It becomes negligible at a point in space. Beyond that, there is no atmosphere, only vaccum.
the air gets thinner as you get nearer the top.
atmosphere
Air does not cover space. Air is the atmosphere of the Earth and as you ho higher the air gets thinner and thinner.