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Assessment
What role do phytoplankton play in the carbon cycle?
They absorb carbon dioxide during photosynthesis.
They release carbon dioxide back into the atmosphere.
They decompose organic matter into carbon.
They do not have any impact on the carbon cycle.
Which process primarily allows phytoplankton to sequester carbon?
Respiration
Photosynthesis
Decomposition
Nitrification
How do changes in phytoplankton populations potentially affect global warming?
Increased phytoplankton can decrease atmospheric CO2 levels.
Decreased phytoplankton can increase oxygen levels.
Phytoplankton populations have no effect on climate change.
Increased phytoplankton can lead to more carbon emissions.
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