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Card 6

Front

What does oxides of nitrogen cause, and how is it formed?

Back

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Card 7

Front

What does sulfur dioxide cause, and how is it formed?

Back

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Card 8

Front

What does a catalytic converter do?

Back

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Card 9

Front

What is the percentage of oxygen in the air?

Back

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Card 10

Front

What is the percentage of nitrogen in the air?

Back

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Card 11

Front

What is the percentage of carbon dioxide in the air?

Back

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Card 12

Front

Talk about the process of Carbon cycle.

Back

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Card 13

Front

How is it thought that the atmosphere was probably created??

Back

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Card 14

Front

How is it thought the atmosphere has evolved from when it was created, to get to the air levels of today? Explain.

Back

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Card 15

Front

Due to an increase in population, there has also been an increase in three other things, which affects the levels of Carbon dioxide. What are they?

Back

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