According to the hypothesis of serial endosymbiosis,

According to the hypothesis of serial endosymbiosis,
A)life originated from nonliving matter
B)the pace of evolution quickened at the start of the Cambrian period
C)chloroplasts, mitochondria, and possibly other organelles originated from intimate relationships among prokaryotic cells
D)banded iron formations reflect the buildup of sufficient oxygen in the atmosphere to oxidize iron at Earth’s surface
E)the first photosynthetic organisms appeared 3.1 bya to 3.5 bya


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