Multiple choice

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

The atmosphere which is important for human beings is

  1. troposphere

  2. mesosphere

  3. stratosphere

  4. ionosphere

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

The troposphere is the most important atmospheric layer for human beings because it contains the air we breathe, all weather phenomena, and virtually all human activity. It extends from ground level to about 10-15 km altitude and contains about 75-80% of the atmosphere's mass. The other layers are either too high (ionosphere, exosphere) or lack the conditions necessary for life (mesosphere, stratosphere).

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