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41. What is the region of the Earth's atmosphere that acts like a mirror to the HF sky wave, reflecting back to earth? A. Ionosphere B. Mesosphere C. Stratosphere D. Troposphere

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Answer:

A. IONOSPHERE

Explanation:

place in earth's atmosphere

extending from about 80 to 300 km (about 50 to 185 miles) in altitude, the ionosphere is an electrically conducting region capable of reflecting radio signals back to earth. this altitude upward defines the ionosphere.

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