Scientists theorizes that there is the same amount of water on Earth now as there was when the Earth formed, about 4.5 billion years ago.
Cite:
http://water.epa.gov/learn/kids/drinkingwater/waterfactsoflife.cfm
Scientists theorizes that there is the same amount of water on Earth now as there was when the Earth formed, about 4.5 billion years ago.
Cite:
http://water.epa.gov/learn/kids/drinkingwater/waterfactsoflife.cfm
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