Through a mechanical chain of events, sound waves traveling through the auditory canal cause
in the eardrum.
A. miniscule vibrations
B. minute differences
C. nerve disorders
D. hearing loss

letter A

Explanation:

hope this helps

A

i hope im correct if im not im sorry

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .