ThseMoErmdin ThseMoErmdin
  • 23-02-2017
  • Biology
contestada

My test is timed PLse answer
What is the basis of all sounds?
A.Vibrating molecules in the air
B.wave cycles
C.nodes
D.waveforms

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elizabethhart9
elizabethhart9 elizabethhart9
  • 23-02-2017
i wanna say the answer is a 
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