Decibels measure intensity. If you whisper in an empty room it will measure between 0 and 1 db. This indicates the intensity of sound is minimal. This is considered the threshold of hearing.
A sound that measures 30 decibels is a 1000 times louder than the the threshold of hearing. An example of this is the noise of a regular computer produces between 20-40 dB.
It was led by <span> Cromwell.</span>
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Explanation:
battle of Lexington and concord
April 1775; British troops march out of Boston to find arms and munitions stockpiled by the Patriots; British troops are chased back to Boston and suffer heavy losses; known as the "shots heard around the world," and recognized as being the beginning of the American Revolution
