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Radio waves transmitted from the earth are reflected back by the:

AIonosphere
BTroposphere
COzone layer
DExosphere
Answer & Solution
Correct answer: A. Ionosphere
1. One layer holds electrically charged particles. 2. The ionosphere reflects radio waves back to the earth. 3. That is what makes long-range radio possible. _Source: syllabus Geography, 'Composition and Structure of Atmosphere' (kegy207)_
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