The Carbon Cycle

Which of the following is NOT a carbon source?

• Photosynthesis
• Decay of dead matter
• Volcanic eruptions
• Respiration of animals and humans

What are the elements called that absorb carbon from the atmosphere?

• Carbon reservoirs
• Carbon deposits
• Carbon sinks
• Carbon sources

What are the elements called that release carbon in some form into the atmosphere?

• Carbon deposits
• Carbon sources
• Carbon reservoirs
• Carbon sinks

What happens to Carbon when plants, animals, or humans die?

• It is used for photosynthesis
• It is released into the atmosphere through respiration
• It is transferred to the Earth through decay and decomposition
• It becomes fossil fuels

What happens to carbon when the surface water of oceans is warm?

• It is released into the atmosphere
• It is stored in the soil
• It is absorbed into the water
• It is consumed by animals

Which of the following is NOT a carbon sink?

• Soil
• Plants and algae
• Volcanic eruptions
• Fossil fuels

Which process in the carbon cycle involves the absorption of carbon by plants?

• Photosynthesis
• Evaporation
• Combustion
• Respiration

Which of the following is a carbon storage area or sink?

• Factories
• Forests
• Atmosphere
• Cities

Which of the following are the different processes in the carbon cycle?

• Combustion
• Respiration
• Photosynthesis
• All of the above

What is the a consequence of too much carbon being released into the atmosphere?

• Increased ocean acidity
• Increased CO2 in the atmosphere
• All of the others
• Climate change