Evolution of the Atmosphere

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GCSE (1) Core) Chemistry Fichas sobre Evolution of the Atmosphere, creado por Alex C el 30/12/2015.
Alex C
Fichas por Alex C, actualizado hace más de 1 año
Alex C
Creado por Alex C hace casi 9 años
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Pregunta Respuesta
Step 1 Volcanic activity releases: CO2 Methane Ammonia Water vapour
Step 2 Water vapour condenses to form oceans.
Step 3 Green plants evolve to take in CO2 and breathe out O2.
Step 4 Carbon becomes locked up in sedimentary rocks as carbonates and fossil fuels.
Step 5 Methane and ammonia react with O2, and nitrogen is released (nitrogen also occurs as a result of dentrifying bacteria on nitrates of decaying plants)
Step 6 Some of O2 is converted into ozone. Ozone layer blocks out harmful UV rays.
Step 7 This allows for the development of new life. Plants & algae produced O2 that's now in atmosphere.
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