Earth's earliest atmosphere was most likely composed of hydrogen,helium,
A)oxygen,and nitrogen.
B)methane,and nitrogen.
C)methane,and ammonia.
D)oxygen,and ozone.

Name: Earth's earliest atmosphere was most likely composed of hydrogen,helium, A)oxygen,and nitrogen. B)methane,and nitrogen. C)methane,and ammonia. D)oxygen,and ozone.
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Question

Quizplus · Accepted Answer

Earth's earliest atmosphere was most likely composed of hydrogen, helium, methane, and ammonia, stemming from the volcanic outgassing and the lack of free oxygen.

Earth's Earliest Atmosphere Was Most Likely Composed of Hydrogen,helium