Earth's Atmosphere
- Created by: Rachelmartin1971
- Created on: 06-04-15 22:51
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- Earth's Atmosphere
- Early Atmosphere
- Volcanoes
- Water vapour
- Cools
- Condenses
- Rain forms the oceans
- Condenses
- Cools
- Carbon Dioxide
- Tiny plants start photo-synthesis
- CO2 levels drop, O2 levels rise
- CO2 dissolves into the sea, levels drop
- Marine creatures use CO2 to build shells
- Calcium carbonate
- Marine creatures use CO2 to build shells
- Tiny plants start photo-synthesis
- Water vapour
- Volcanoes
- Today's Atmosphere
- Oxygen 21%
- Carbon Dioxide 0.04%
- Deforestation
- Combustion
- Nitrogen 78%
- Argon 0.9%
- Early Atmosphere
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