| What happened in the First Phase of our Atmosphere? | 1. Earth, at the Start, was Molten. Virtually no Atmosphere appeared
2. Then the Surface cooled and a Crust was Made, but Volcanoes then Appeared and Erupted, giving out Gases from Inside the Earth
3. Those Gases was Carbon Dioxide, Steam, [Water] Methane and Ammonia
4. So the Atmosphere now is Mostly Carbon Dioxide and Water Vapour, which then Condensed to make the Oceans.
-Important to note Oxygen was Non-Existent |
| What happened in the Second Phase of our Atmosphere? | 5. Most of the CO², from the Eruptions, was Dissolved in the Oceans
6. Nitrogen then finally joined in; Ammonia Reacted with Oxygen to give off Nitrogen, and also Denitrifying Bacteria also released Nitrogen
7. Nitrogen then began Increasing in its Percentage as its very Unreactive, so it can't really be Broken Down.
8. Then, Oxygen joined in as Green Plants Evolved over Earth, meaning Photosynthesis
9. So the Oxygen Levels began to Increase, and the Carbon Dioxide Levels fell as it became Fossil Fuels and Sedimentary Rocks |
| What happened in the Third Phase of our Atmosphere? | 10. This Abundance of Oxygen killed off Organisms that couldn't Handle it; This also gave way to Complex Organisms that could use the Oxygen
11. Oxygen also made the Ozone Layer, which Prevented Harmful rays from the Sun, meaning More Complex Organisms can Evolve
12. Now, Carbon Dioxide is very Scarce |
| So, what's the Percentage of
-Nitrogen
-Oxygen
-Carbon Dioxide
As of the Modern Day | -78% is Nitrogen
-21% is Oxygen
-0.04% is Carbon Dioxide |
