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TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

• True
• False

How is the carbon cycle similar to the water cycle?

• Both involve liquid substances falling to the Earth from the atmosphere?

• Neither process works at low temperature.

• Both involve the transfer of substances between animals, plants, and the Earth.

• Both involve the transfer of substances between the earth and outer space.

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above

This reservoir of carbon is made up of the ground and contains soil, rocks, fossil fuels, and other geological formations.

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above

This reservoir of carbon is the air and gasses that surround the Earth.

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

This reservoir of carbon is all the water on Earth including in the clouds, oceans, rivers, streams, and underground water supplies.

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

This reservoir of carbon contains all life on Earth.

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

Respiration is the process by which animals take in _____ and release _____. 

• photosynthesis, air
• carbon, oxygen
• oxygen
• oxygen, carbon dioxide

Which gas do animals release, that plants depend on for survival?

• Carbon dioxide

• Oxygen

• Sunlight

• Water