BIOL 1202 Chapter 25

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Department
Biological Sciences
Course
BIOL 1202
Professor
All Professors
Semester
Spring

Description
Chapter25TheHistoryofLifeonEarth09022014EarlyEarthEarthisabout46BillionyearsoldRadiometricdatingofmeteoritesandmoonrocksLifearoseabout38billionyearsagoChemicaltracesinrocks38BYFossilBacteriainrocks35BYNoSpontaneousgenerationnowbutmusthavehappenedthenConditionsonEarlyEarthAtmosphereCO2CH4NH3H2SH20NofreeoxygenAbun
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