MayMayMuffin MayMayMuffin

08-06-2016
Biology

contestada

Before there was any life on earth, which gas was absent from earth’s ancient atmosphere? A. nitrogen B. ammonia C. oxygen D. methane

Respuesta :

Jennnyyy Jennnyyy

08-06-2016

Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
:)

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avajk33 avajk33

03-02-2021

Answer:

Oxygen

Explanation:

took the test on k12

Answer Link

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