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Geography, 21.06.2019 18:40
What is the primary justification of the hypothesis that the early earth environment was void of oxygen? ( 2 points) data showing the concentrations of gases extracted from rocks fossil evidence regarding the origin of eukaryotes generally accepted atmospheric conditions molecular evidence based on evolutionary traits.
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Geography, 23.06.2019 13:30
Which layer surrounds the center of the earth? a: crust b: core c: mantle
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Geography, 23.06.2019 22:20
The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?
Answers: 2
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