World Population: 6,372,797,742 Total Area: 510,072,000 sq km, or 196,939,900 sq miles (70.8% of the world's surface is water, 29.2% is land) Gross World Product (GWP): $51.48 trillion(2003 est.) More >>
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The reason is gravity . If the Earth were made of water, a spherical shape would be stable. In that case, if we took a wedge of the Earth, starting with one square mile on the surface and tapering down to the middle of the Earth ( sketch on...
http://www-istp.gsfc.nasa.gov/stargaze/Lcolumb.htm
"Earth Day Facts: When It Is, How It Began, What to Do--by John Roach" From not-so-humble beginnings in 1970, when 20 million participated across the U.S., Earth Day has grown into a global tradition, with a billion expected to ta...
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based on the energy from the sun (estimated remaining hydrogen in the core), radio carbon dating of rock and meteorites which have fallen to earth, the Earth, sun and solar system are all about 4.6 billion years. However those are rough est...
http://ca.answers.yahoo.com/question/index?qid=20091112...
There is a lot on Earth. We have plants, animals, humans, trees and much more. Earth has water and land mass. From space you can see that Earth is blue.
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Some facts about Earth are: 1) Its atmosphere is mostly composed of Nitrogen and Oxygen. 2) The Earth orbits once a year. 3) The Earth has no rings. 4) The Earth has only one moon. 5) The Earth rotates every 23 hrs and 56.1 minutes.
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・ Earth is the only planet with life that has been found so far. ・ Earth has 1 moon, Luna. ・ Earth is not a gas planet. ・ Earth has the right temperature to sustain life. ・ Earth has gravity. ・ Earth takes 365 days to go around the sun once...
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