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Assessment
What is the primary process by which carbon dioxide is taken from the atmosphere by plants?
Photosynthesis
Respiration
Decomposition
Evaporation
Which of the following processes releases carbon dioxide back into the atmosphere?
Photosynthesis
Sedimentation
Combustion of fossil fuels
Nitrogen fixation
In the carbon cycle, which reservoir holds the most carbon?
Atmosphere
Soil
Fossil fuels
Oceans
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