Biology, 19.05.2020 20:11 genyjoannerubiera

In this article the author explains what scientists are trying to find out. What are the scientists in the article trying to find out?
Question 2 options:

A .when sulfur first appeared in Earth’s early atmosphere

B .how the proportions of different sulfur isotopes change in the geologic record

C .how the ozone layer formed and the effects of its formation

D .when oxygen increased in Earth’s early atmosphere

Answers: 2

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In this article the author explains what scientists are trying to find out. What are the scientists...