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Which organisms were the earliest oxygen-producing life-forms? earth worms

cyanobacteria

mold

Euglena

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Which organisms were the earliest oxygen-producing life-forms? earth worms

cyanobacteri...

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Which organisms were the earliest oxygen-producing life-forms? earth worms cyanobacteria mold Euglena

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Which organisms were the earliest oxygen-producing life-forms? earth worms

cyanobacteria

mold

Euglena