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Card 36

Front

phase 2: 4

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Card 37

Front

phase 3:

Back

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Card 38

Front

phase 3: 1

Back

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Card 39

Front

phase 3: 2

Back

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Card 40

Front

phase 3: 3

Back

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Card 41

Front

what was the earths surface originally

Back

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Card 42

Front

2 ways CO2 decreased

Back

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Card 43

Front

what is the primordial soup theory

Back

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Card 44

Front

what does the primordial soup theory suggest the earths atmosphere was made from

Back

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Card 45

Front

what caused a chemical reaction to take place between these gases

Back

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