Multiple choice general knowledge

the part of the atmosphere that is ionized by solar radiation

  1. ionosphere

  2. heterosphere

  3. homosphere

  4. troposphere
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A Correct answer
Explanation

The ionosphere is the atmospheric region where solar and cosmic radiation ionize atoms and molecules, creating free electrons and ions. Located in the upper mesosphere and thermosphere (60-1000 km altitude), it's crucial for radio communication as it reflects radio waves back to Earth.

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