The Carbon Cycle

What is the role of carbon?

• organisms breath in carbon

• it is a key ingredient of living tissue

• plants intake carbon

• carbon is deadly

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Which process removes carbon dioxide from the atmosphere?

• deforestation

• tree farms

• burning fossil fuels

• cellular respiration

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NGSS.MS-LS2-3

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Forests are a carbon sink. This means that they...

• add carbon dioxide to the atmosphere

• remove carbon dioxide from the atmosphere

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Which of the following is correct?

• There is as much carbon on earth as when it was formed

• Carbon is being created whenever it is recycled

• Carbon is lost every time it is recycled

• Carbon changes to different forms and is never recovered

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The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.

• the Carbon Cycle

• the Oxygen Cycle

• the Carbon dioxide Cycle

• the Water Cycle

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Over ________________ of years, once-living matter that remains in the ground can transform into fossil fuels.

• millions

• hundreds

• thousands

• a few handful

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Carbon is found in

• all living things

• all dead things

• all elements and compounds

• all non-living things

• only water

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NGSS.MS-LS2-3

What does the diagram indicate regarding the carbon cycle?

• Only terrestrial processes cycle carbon

• Only aquatic processes cycle carbon

• Terrestrial and aquatic processes are separate

• Both terrestrial and aquatic cycles operate together

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What organisms form fossils?

• animals

• plants and animals

• CaCO2

• sedimentary rocks

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What are two (2) ways to reduce the carbon emissions from passenger cars?

• Use less expensive gas

• Carpooling

• Public Transportation

• Driving only passenger cars

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