Edgywell Edgywell

25-11-2019
Biology

contestada

(HELP QUICK!!) Earth's atmosphere was primarily composed of _______ until the Proterozoic era

A. Oxygen

B. Nitrogen

C. Methane

D. Carbon Dioxide

Respuesta :

project46hasbeencont project46hasbeencont

25-11-2019

Answer:

methane

Explanation:

Answer Link

CuteCookieShopkin CuteCookieShopkin

16-05-2020

Answer:

C. Methane is the answer

Answer Link

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