What role do plankton play in the oxygen cycle? A. They produce oxygen in the forests. B. They produce oxygen in the ocean. C. They absorb carbon dioxide in the forests. D. They release carbon dioxide

What role do plankton play in the oxygen cycle?

A. They produce oxygen in the forests.
B. They produce oxygen in the ocean.
C. They absorb carbon dioxide in the forests.
D. They release carbon dioxide in the ocean.

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