Answers

2014-07-27T10:11:04+05:30
Earth is know as blue planet; Because its 3/4 part is covered with water.
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2014-07-27T10:11:32+05:30
The earth is known as a blue planet because its 3 by 4 of the surface is covered with water, so it appears like a blue ball from outer space. (:
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