8.11C Carbon Cycle Review

The carbon cycle is a process that involves the movement of carbon through the atmosphere, oceans, soil, and living organisms. Which of the following best describes this cycle?

• A process that involves only the movement of carbon in the atmosphere.

• A cycle that includes the movement of carbon through the atmosphere, oceans, soil, and living organisms.

• A process that is limited to the movement of carbon in the oceans.

• A cycle that involves only the movement of carbon in living organisms.

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How does carbon move throughout our planet?

• Through the carbon cycle

• By photosynthesis only

• By fossil fuel combustion only

• Through ocean currents only

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Where else have we heard these parts of the carbon cycle before?

• In biology class

• In a chemistry textbook

• During a geography lecture

• In a history documentary

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Which of the following are examples of species that go through photosynthesis?

• Plants

• Fungi

• Animals

• Bacteria

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What is another example of a combustion reaction?

• Burning of wood

• Photosynthesis

• Rusting of iron

• Melting of ice

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Respiration releases carbon back into the atmosphere by:

• Photosynthesis

• Combustion

• Exhalation of carbon dioxide

• Absorption by plants

Restoration scientists work to bring ecosystems back to how they were before they were damaged. Some work specifically with coastal ecosystems, like mangrove forests. They work to regrow mangroves on the coasts to help decrease the amount of carbon that is released into the atmosphere and ocean by planting mangroves along the coast. How does this job help the carbon cycle?

• By increasing carbon emissions

• By decreasing carbon emissions

• By having no effect on carbon emissions

• By increasing oxygen levels

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Match the carbon placement description with its process: Carbon is released into the atmosphere as a result of this process.

• combustion

• photosynthesis

• respiration

• decomposition

Match the carbon placement description with its process: Carbon dioxide is produced during this process and removed through breathing.

• respiration

• photosynthesis

• fermentation

• combustion

Match the carbon placement description with its process: An organism breaks down and the carbon moves into the soil.

• decomposition

• photosynthesis

• respiration

• combustion