higgypig29
contestada

20. Played a major role in the formation of the modern earth's atmosphere.
(5 Points)
Photosynthesis
Respiration
Both

Respuesta :

sagesterpoppins

Answer:

The answer would be both

Explanation:

It is both because photosynthesis gave oxygen and respiration gave carbon dioxide that created a life cycle for plants and animals on earth! Have a great day and I hope this helped :D

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