Will give brainliest! if right!
the earpiece of your telephone converts electric signals back into sound waves, so that you can hear the person talking to you on the other end of the phone.

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Your own ears and brain convert the electrical waves into sound waves.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the