Multiple choice

The lowest portion of the atmosphere of the earth is called:

  1. Stratosphere

  2. Ionosphere

  3. Mesosphere

  4. Troposphere

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Troposphere is the lowest layer of Earth's atmosphere, extending from ground level to about 10-15 km altitude. It contains approximately 75% of the atmosphere's mass and is where all weather phenomena occur.

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