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http://www.universehttp://www.universetoday.com/14491/why-does-the-earth-rotate/why does the earth rotatehttp://www.youtube.com/watch?v=fDpVCsMkrQ0today.com/14491/why-does-the-earth-rotate/
The rotation of our planet has an impact on almost all life on Earth. As the Earth turns on its axis, each part of the planet gets a chance to face the Sun and be warmed in a relatively short period of time.