The long-term carbon cycle operates over millions of years and ... Figure 4: Systems-analysis diagram showing some of the feedback relationships between marine organic carbon burial, nutrients ...

Left to themselves, the two flows balance (see diagram). These flows create a ... The plants-and-food branch of the carbon cycle, though, is not quite perfect. Like the little bit left in the ...

Figure 1: Predicted log f O 2 versus pH diagrams for aqueous C-species constructed ... These results have important implications for the deep carbon cycle. First, substantial amounts of carbon ...