Biology, 04.02.2020 06:08 nevaehkb

Oxygen first entered earth's atmosphere when one-celled organisms resembling modern cyanobacteria began to carry out the process of

a fossilization
b evolution
c photosynthesis
d erosion

Answers: 3

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More questions: Biology Another questions

Oxygen first entered earth's atmosphere when one-celled organisms resembling modern cyanobacteria began to carry out the process of a fossilization b evolution c photosynthesis d erosion

Answers

Another question on Biology

Oxygen first entered earth's atmosphere when one-celled organisms resembling modern cyanobacteria began to carry out the process of

a fossilization
b evolution
c photosynthesis
d erosion