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Gram-negative bacteria that first introduced oxygen into the atmosphere through photosynthesis area. methanogens.b. pathogens.c. lichensd. cyanobacteria.
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Plantlike photosynthesis that releases O2 occurs in (A) cyanobacteria. (B) archaea. (C) gram-positive bacteria. (D) chemoautotrophic bacteria.
Plantlike photosynthesis that releases O2 occurs in \begin{equation}\begin{array}{ll}{\text { (A) cyanobacteria. }} & {\text { (C) gram-positive bacteria. }} \\ {\text { (B) archaea. }} & {(\text { D) chemoautophic bacteria. }}\end{array}\end{equation}
The bacterial phylum that typically produces oxygen gas as a product of photosynthesis is a. Proteobacteria. b. Cyanobacteria. c. the Gram-positive bacteria. d. all of the above. e. none of the above.
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