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They produce oxygen during photosynthesis.

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Laurence Aufderhar

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βˆ™ 2y ago
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βˆ™ 14y ago

The planktons make oxygen because it breaths CO2. CO2 is 1 carbon atom and 2 oxygen atoms. So when the planktons get the CO2, it gets ONLY the carbon atom and leaves the oxygen atoms as a form as waste. The waste of the plankton is the benifeit of the animals on earth.

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βˆ™ 14y ago

Yes and plants are the other 50%.

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βˆ™ 16y ago

90% of the air on earth

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βˆ™ 16y ago

yes indeed

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Q: How much oxygen do plankton give off?
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