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August 4, 2015

Homework Help: Biology/Help

Posted by Dulce on Wednesday, July 30, 2014 at 12:57pm.

Which of the following is the purpose of the waxy substance that builds up in the ear canal?
A. Insulating the ear canal

B. Trapping and removing debris

C. Promoting sound conduction

D. Cushioning and stabilizing the pinna
I thinks it is B

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