How can we find the percentage of oxygen in the air?
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Card 7
Front
When roughly was the Earth's atmosphere formed?
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Card 8
Front
How was the Earth's atmosphere formed?
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Card 9
Front
What do volcanoes release large amounts of?
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Card 10
Front
Different processes have removed almost all of the carbon dioxide that was in the early atmosphere, leaving the air with the composition we have today. What happened to the carbon dioxide?
