Scientists can determine if oxygen existed in Earth's Archean atmosphere by

a. determining the lack of oxidation that occurred.

b. determining how many people survived.

c. looking at the amount of salt content in rocks.

d. looking for oxidized iron in rocks.

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11 January, 06:36

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Caitlin Solomon · Answer 1

d. looking for oxidized iron in rocks.

Scientists can determine if oxygen existed in Earth's Archean atmosphere bya. determining the lack of oxidation that occurred.b. determining how many people survived.c. looking at the amount of salt content in rocks.d. looking for oxidized iron in rocks.