Answers

2014-02-20T18:32:09+08:00
The revolution of the Earth is because of the orbit the Earth is stuck up to. While it rotates on its own axis, it revolves around the sun at the same time.
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2014-02-21T18:53:34+08:00
The revolution of the earth is the movement around its orbit 
example 
earth : 365 day 
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