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10 questions from this quiz
It forms 4 strong covalent bonds
A store absorbing more C than it releases
CH₄
The planet's interior/mantle
Approximately 4,100 GtC
Between 37,000 & 40,000 GtC
31% biomass, 69% soil
280 ppm
H₂CO₃ (carbonic acid)
3.1 times larger
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