If the atmospheric carbon concentration was 280 parts per million in was the concentration in 2012? A.)167 parts per million B.)393 parts per million C.)681 parts per million D.)280 parts per million

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asked Oct 28, 2020 145k views

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If the atmospheric carbon concentration was 280 parts per million in was the concentration in 2012?

A.)167 parts per million
B.)393 parts per million
C.)681 parts per million
D.)280 parts per million

Mathematics
middle-school

Kst asked

by Kst

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Answer:

393 parts per million

Explanation:

Christopher Mahan answered Oct 29, 2020

by Christopher Mahan

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4 votes

B. Because I just look at a graph explaining this

FredMan answered Nov 2, 2020

by FredMan

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