According to scientific evidence, the first organisms on Earth must have been ____.
A) aerobic
B) pathogenic
C) anaerobic
D) heterotrophs
E) multicellular

Name: According to scientific evidence, the first organisms on Earth must have been ____. A) aerobic B) pathogenic C) anaerobic D) heterotrophs E) multicellular
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Question

​According to scientific evidence, the first organisms on Earth must have been ____.
A) ​aerobic
B) ​pathogenic
C) ​anaerobic
D) ​heterotrophs
E) ​multicellular

Quizplus · Accepted Answer

The first organisms on Earth were anaerobic because the early Earth's atmosphere lacked oxygen, so they did not require oxygen for survival.

​According to Scientific Evidence, the First Organisms on Earth Must

According to Scientific Evidence, the First Organisms on Earth Must