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How to solve problems of Transportation by using science
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According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?
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Which feature of a human community is similar to a niche in a biological community
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How to solve problems of Transportation by using science...
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