Use the table to answer the question.
1750 to 2012
source
coal
oil
gas...
Biology, 30.10.2019 00:31 ellaemtagedeane
Use the table to answer the question.
1750 to 2012
source
coal
oil
gas
cement production
land-use
carbon released (ppm)
86
64
26
76
sink
carbon absorbed (ppm)
land
68
76
ocean
if the atmospheric carbon concentration was 280 parts per million in 1750, what was the concentration in 2012?
Answers: 1
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