Multiple choice

What percentage of the troposphere is atmospheric gasses?

  1. 50%

  2. 55%

  3. 75%

  4. 25%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The troposphere is the densest layer of the atmosphere, containing approximately 75% of the total mass of the atmosphere's gases. This high density is due to gravity pulling the air molecules closest to Earth's surface.

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