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Refer to the figure of the global carbon cycle. (Note: Boxes represent major pools of C, measured in petagrams [1 Pg = 1015g]. Arrows represent major fluxes of C, measured in Pg per year; anthropogenic fluxes are shown in orange.)In the absence of human activity, the net flux would be _______ Pg.Select one:a. ‒4b. ‒3c. 1.7d. 4.7
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