Biology, 09.02.2021 01:30 FailingstudentXD
Which of the following describes how Earth's atmosphere changed during Precambrian time?
A. The amount of carbon dioxide increased.
B. Torrential rains never reached the surface until the Paleozoic era.
C. The amount of oxygen increased.
D. Precambrian oxygen was quickly used up by plants.
Answers: 3
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Which of the following describes how Earth's atmosphere changed during Precambrian time?
A. The amo...
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