Multiple choice

In atmosphere the lowermost layer is ______.

  1. troposphere

  2. exosphere

  3. ionosphere

  4. stratosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The troposphere is the lowest layer of Earth's atmosphere, extending from the surface up to about 8-15 km altitude depending on latitude. This layer contains about 80% of the atmosphere's mass and is where all weather occurs. The stratosphere is above the troposphere. The ionosphere and exosphere are much higher atmospheric layers.

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