Biology, 27.01.2021 22:20 pacpac1172
What provides evidence of an increase in animal species at the same time that atmospheric oxygen concentrations increased?
A. rust deposits
B. anaerobic organisms
C. fossil record
D. stromatolites
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Adistinctive characteristic of mammals that is not observed in other vertebrates is
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What provides evidence of an increase in animal species at the same time that atmospheric oxygen con...
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