Flashcards
Evolution of the Atmosphere
Flashcards do conjunto (7)
- 1Step 1Volcanic activity releases:
CO2
Methane
Ammonia
Water vapour - 2Step 2Water vapour condenses to form oceans.
- 3Step 3Green plants evolve to take in CO2 and breathe out O2.
- 4Step 4Carbon becomes locked up in sedimentary rocks as carbonates and fossil fuels.
- 5Step 5Methane and ammonia react with O2, and nitrogen is released (nitrogen also occurs as a result of dentrifying bacteria on nitrates of decaying plants)
- 6Step 6Some of O2 is converted into ozone. Ozone layer blocks out harmful UV rays.
- 7Step 7This allows for the development of new life.
Plants & algae produced O2 that's now in atmosphere.
Informações
- Descrição
- GCSE Chemistry (1) Core) FlashCards sobre Evolution of the Atmosphere, criado por Alex C em 30-12-2015.
- Criado por
- Alex C
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