v2fateclan v2fateclan
  • 24-07-2020
  • Biology
contestada

During which eon did oxygen begin to build up the most in Earth’s atmosphere? a.)Phanerozoic b.)Proterozoic c.)Hadean d.)Archean

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ksalvesonbcs ksalvesonbcs
  • 24-07-2020

phanerazoic

if there was no oxygen then why were there dinosoars

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mmmaggots
mmmaggots mmmaggots
  • 03-05-2021

Answer:

b) Proterozoic eon

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