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by gus_massa 2491 days ago
No, with some minor simplifications, the plants amount of CO2 that the pants absorb is proportional to the amount of O2 they produce. So

Does the Amazon provide 20% of our oxygen?

is equivalent to

Does the Amazon remove 20% of our waste carbon dioxide?

The main part of the "lungs" of the planet is the phytoplankton in the sea.