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Last Universal Common Ancestor

Created for Albert.io. Copyright 2016. All rights reserved.

It is generally agreed that this organism likely existed between 3.5 and 3.8 billion years ago, (7) and until recently, scientists had been unable to do more than speculate about what LUCA might have looked like, or what kind of environment it might have inhabited.

A

NO CHANGE

B

for until

C

but until

D

so until

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