Multiple choice

Directions: Choose the appropriate answer from the options given below:

Which is the lowest part of the atmosphere?

  1. Ionosphere

  2. Mesosphere

  3. Stratosphere

  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 approximately 10-15 kilometers altitude. This layer contains about 75-80% of the atmosphere's mass and virtually all weather phenomena. The ionosphere is much higher, the mesosphere is above the stratosphere, and the stratosphere lies above the troposphere.

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