Why is the Huronian Supergroup rock formation particularly interesting to scientists?
A...
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Biology, 19.05.2020 20:19 smiley29162
Why is the Huronian Supergroup rock formation particularly interesting to scientists?
A .because it looks like a cross-section of a giant, stone encyclopedia
B .because it formed during the period when oxygen began to accumulate in the atmosphere
C .because it contains unusually large amounts of oxygen and sulfur
D .because it formed during the period when oxygen began to accumulate in the atmosphere
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