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Unformatted text preview: Mass-volcanism Released water vapor, sulfates, and CO2 No free oxygen Outgassing Various chemical reactions came about Contributing Factors Hydrogen and Helium escaped the earths gravity in time. Ice comets introduced more water vapor. Plant Life Adapted Used rock, etc. to protect themselves from harmful radiation. Oxygen has the property of shielding from damaging sunlight. When plants decay, Nitrogen in produced. Plant life key. Oxygen in time can produce ozone (O3). Both shield from harmful radiation. N2, O2, Argon (inert gas doesnt react with anything) 40K = Potassium 40 Greenhouse gasses Infrared radiation = HEAT Water vapor most dominant greenhouse gas Shortwave UV Sun Ozone Longwave infrared earth...
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- Spring '08