I have always wondered that, but not precisely, I mean you could, just not always. So, yes.
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Answer:
Social media as friend for marketing to advertise his books
To let more attention come to him so be could make markert
Answer:
True.
Explanation:
Refraction is the bending of a wave as it passes at an angle from one to medium to another. When a wave moves from one medium to another, the wave's speed changes. When a wave enters a new medium at an angle, the part of the wave that enters first begins traveling at a different speed from the rest of the wave.