| Humberto村 〜A First Class stamp http://www.leezasurfaces.com/group-community-service-projects/ machinery change management essay brigade Most frogs do not possess an outer ear like humans, but a middle ear with an eardrum located directly on the surface of the head. Incoming sound waves make the eardrum vibrate, and the eardrum delivers these vibrations using ossicles to the inner ear where hair cells translate them into electric signals sent to the brain.
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