MELANIE7382 MELANIE7382
  • 10-06-2017
  • Physics
contestada

How did oxygen (O2) get into Earth's atmosphere??

Respuesta :

jacobgray90
jacobgray90 jacobgray90
  • 20-06-2017
through photosynthesis of plants. Plants take in carbon dioxide (CO2) and produce oxygen (O2)
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