brianaaaaa69
brianaaaaa69 brianaaaaa69
  • 03-12-2019
  • Biology
contestada

How did Earth's atmosphere become oxygen-rich?
O
A. Volcanic outgassing
O
B. Tectonic movement
O
O
c. Ozone depletion
D. Biological activity

Respuesta :

Ajae112 Ajae112
  • 19-01-2021

Answer:

(D) Biological activity

Explanation:

just took the ap3x quiz :)

Answer Link
HaruAzuna
HaruAzuna HaruAzuna
  • 26-05-2022

Answer:

D.) Biological activity

Explanation:

I got it correct

Answer Link

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