CgoodybugMileysmas CgoodybugMileysmas

17-03-2016
Biology

Answered

About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because _____. oxygen became available from cyanobacteria banded iron formations developed meteorite impacts increased the atmosphere got thicker from volcanic outgassing

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Anonymous Anonymous

30-03-2016

Oxygen became available from cyanobacteria

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