2 Origins of Water 5

2 Origins of Water 5 - 3.6 million tons(3.3 billion...

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3. Comets Small, but possibly numerous Wrong kind of water?
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Nucleus Proton (+) Electron (-) Hydrogen in Water (H 2 O) Deuterium has a neutron Neutron The earth ratio of hydrogen to deuterium is about 6000:1
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LINEAR was the first comet with a chemistry that indicated its water had the same ratio of hydrogen to deuterium as the water actually found on Earth. Comet LINEAR (2000)
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Unformatted text preview: 3.6 million tons (3.3 billion kilograms) of water Origins of Water comet LINEAR Setting the stage for the evolution of life Water is an essential precursor to life. Water and Life Water and Life The most abundant substance in living systems % 70 Plants ~ 80% New born baby ~ 77% Grown-up man ~ 65% Grown-up woman ~ 58% The elderly ~ 50%...
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This note was uploaded on 02/10/2011 for the course SWS 2007 taught by Professor bonczek during the Fall '09 term at University of Florida.

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2 Origins of Water 5 - 3.6 million tons(3.3 billion...

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