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Card 26

Front

List 3 ways carbon dioxide is put into the atmosphere and what balances out the levels of carbon dioxide?

Back

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Card 27

Front

Explain how human activity is affecting the levels of carbon dioxide in the atmosphere?

Back

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Card 28

Front

What kind of air pollution makes limestone buildings and statues look worn?

Back

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Card 29

Front

Name a gas that catalytics converters help to remove from cars exhausts?

Back

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Card 30

Front

What is photochemical smog caused by?

Back

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