The three parts of human ear contributing in hearing are
a) cochlea, ear ossicles and tympanum
b) Eustachian tube,tympanum and utriculus
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no a must be the parts which help for hearing
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Answer: (a) cochlea,ear ossicles and tympanum
Explanation: As cochlea is responsible for hearing,ear ossicles implify the mechanical vibration and tympanum converts sound wave to mechanical vibration,so these three parts help us in hearing.
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