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Mathematics 11 Online
OpenStudy (oppskbeetlejuice):

What is the difference between AM radio waves and FM radio waves? a) AM waves travel short distances along the Earth’s surface; FM waves travel farther. b) FM waves are better reflected by particles in the Earth’s atmosphere. c) An AM wave varies in amplitude; an FM wave varies in frequency. d) An FM wave varies in amplitude; an AM wave varies in frequency.

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