Biology, 19.08.2019 02:30 Nathanr23

During the evolution of life on earth, the photosynthetic organisms initially responsible for raising atmospheric oxygen concentrations from less than 1 percent to about 20 percent were
(a) cyanobacteria
(b) archaea
(c) diatoms
(d) flowering plants
(e) mosses

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During the evolution of life on earth, the photosynthetic organisms initially responsible for raising atmospheric oxygen concentrations from less than 1 percent to about 20 percent were (a) cyanobacteria (b) archaea (c) diatoms (d) flowering plants (e) mosses

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During the evolution of life on earth, the photosynthetic organisms initially responsible for raising atmospheric oxygen concentrations from less than 1 percent to about 20 percent were
(a) cyanobacteria
(b) archaea
(c) diatoms
(d) flowering plants
(e) mosses