APFIVE Carbon Sink Ratio Calculation
Based on the data in the table, what is the approximate ratio of carbon stored in soil organic matter to carbon stored in the atmosphere?
| Carbon Sink | Amount (Billions of Metric Tons) |
|---|---|
| Soil organic matter | ~1500 |
| Atmosphere | ~700 |
A
Approximately 2.2 : 1
B
Approximately 5 : 1
C
One might mistakenly assume a near 1 : 1 ratio, but careful calculation shows otherwise.
D
Approximately 0.45 : 1
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