Answers by Moefinley
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Answers by Moefinley

Answers by Moefinley
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What is the best description of sound waves? a. A source vibrates up and down, causing air molecules to move up and down perpendicular to the direction the wave is transmitted . b. A source vibrates back
answered Jan 10, 2018
7 votes
160k views
What are 4 basic needs all living things must satisfy
answered Jun 30, 2017
5 votes
142k views
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