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  • Environmental Science
  • Radio waves are reflected by the ___________.
Multiple choice

Radio waves are reflected by the ___________.

  1. troposphere

  2. ionosphere

  3. stratosphere

  4. ozone layer

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

The ionosphere contains a high concentration of ions and free electrons, which reflects radio waves back to Earth, enabling long-distance communication.

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