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Mathematics 24 Online
OpenStudy (anonymous):

Sound waves that strike your ear are alternating patterns of ________ and ________ air. A. compressed; expanded B. slow; fast C. longitudinal; transverse D. warm; cool >:P

OpenStudy (anonymous):

A

OpenStudy (anonymous):

hmmm....

OpenStudy (anonymous):

ive learned this before ..that was long ago

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