AP Environmental Sciencehardmcq1 pt
The largest flux of carbon into the atmosphere each year comes from
A.cellular respiration and decomposition
B.volcanic eruptions
C.photosynthesis
D.rock weathering
Explanation
Core Concept
Natural respiration plus decomposition dwarf volcanic and fossil fluxes in scale, though fossil emissions now exceed what sinks can reabsorb.
Correct Answer
Acellular respiration and decomposition
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