More cards in this set

Card 6

Front

What do sulfur dioxide and nitrogen oxide cause?

Back

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Card 7

Front

How is carbon monoxide and nitrogen oxides removed from waste gases?

Back

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Card 8

Front

What are biofuels made up from?

Back

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Card 9

Front

What is biodiesel made up from?

Back

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Card 10

Front

What is an advantage of biodiesel?

Back

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Card 11

Front

Why is this?

Back

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Card 12

Front

What is the disadvantage?

Back

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