Carbon cycle impacts

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Carbon can be found in...?

• The atmosphere
• Inside of the Earth
• Fossil fuels
• All of the above!

Deforestation would result in... (select all that apply)

• an increase in carbon in the biosphere

• a decrease of carbon in the biosphere

• an increase in carbon in the hydrosphere

• a increase of carbon in the atmosphere

What effect would removing phytoplankton from the ocean have?

• an increases of carbon in the geosphere

• a decrease of carbon in the biosphere and increase in the hydrosphere.

• a decrease of carbon in the atmosphere

• an increase of carbon in the biosphere

Which could result in an increase of carbon in the atmosphere?

• An increase in the number of trees

• a decrease in burning fossil fuels

• an increase in volcanic eruptions

• a decrease in the number of animals in the biosphere

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

If the plant population decreased, the amount of carbon in the atmosphere would _________.

• Stay the same

• Increase

• Decrease