What does it mean by amplified sound and also the meaning of 'interlocked bones in the ear amplify the sound that strikes the eardrum'?

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Solution

Normally a sound wave produced from a source will have some energy
if we increase the energy of that sound wave to become it a loud sound by some means like electronic amplification using an amplifier,
then that sound wave is called an amplified sound
the energy of amplified sounds will be larger as compared to its original wave
In human ear,sound is amplified.
when a sound wave is entering ear,
the eardrum vibrates.
The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles. The ossicles amplify the sound and send the sound waves to the inner ear and into the fluid-filled hearing organ (cochlea).

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