The invention from the song dynasty that improved clocks was: The clock tower/clepsydra clock
This invention is the first type of clock that utilized the <em>escapement mechanism </em> that is applied by many European countries around 2 centuries later to produce their clocks.
Eardrums <span>vibrate as sound waves reach them. The vibrations are sent to the brain and and are translated as sound. Some might even say the ear is a transducer, or a device that translates on form of energy into another. </span>
Answer:
SLAVES BECAUSE THEY BUILT DIFERENT
Explanation: