Seudónimo Seudónimo

28-10-2019
Mathematics

contestada

The balance of oxygen in Earth's atmosphere is maintained primarily by which two processes?

A.
photosynthesis and respiration

B.
outgassing and photosynthesis

C.
lightning and fixation by bacteria

D.
the formation of carbonate rocks and outgassing

Respuesta :

mohajr989 mohajr989

28-10-2019

Answer:

D.the fornation of carbonate roack and outgassing

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