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Card 6

Front

How are particulates released into the atmosphere?

Back

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Card 7

Front

What kind of human activity can release gases and particulates into the air?

Back

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Card 8

Front

What natural proceses can release gases and particulates into the air?

Back

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Card 9

Front

How was the Earth's early atmosphere formed?

Back

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Card 10

Front

What did the Earth's early atmosphere mainly consist of?

Back

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Card 11

Front

How were the oceans formed?

Back

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Card 12

Front

How did the evolution of photosynthesising organisms affect the atmosphere?

Back

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Card 13

Front

How was more oxygen added to the atmosphere in the early stages of the earth?

Back

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Card 14

Front

How was carbon dioxide removed from the atmosphere?

Back

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Card 15

Front

What 3 gases have been added to the air due to human activity?

Back

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