kimberlyd8
kimberlyd8 kimberlyd8
  • 06-10-2020
  • Social Studies
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Most of the earth's oxygen is produced by:

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Аноним Аноним
  • 06-10-2020

Answer: plankton

Earth oxygen is mainly composed of plankton. In this case, the plankton we are referring to:

  • bacteria
  • drifting plants
  • drifting algae

Hope it helps!

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