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Card 16

Front

How are materials cycled in a stable community?

Back

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Card 17

Front

How do we use microorganisms in sewage plants?

Back

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Card 18

Front

How do we use microorganisms in a compost heap?

Back

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Card 19

Front

What is the carbon cycle in nature?

Back

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Card 20

Front

What is the combustion reaction involved in the carbon cycle?

Back

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Card 21

Front

What is the evaporation reaction involved in the carbon cycle?

Back

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Card 22

Front

What is the decay of organic matter reaction involved in the carbon cycle?

Back

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Card 23

Front

What is the photsynthesis reaction involved in the carbon cycle?

Back

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Card 24

Front

What is the respiration reaction involved in the carbon cycle?

Back

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Card 25

Front

Why do scientists fear that the carbon cycle may not cope anymore?

Back

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