<prompt> Translate the following text to SwahiliSurprisingly, the marginal cost of SO2, NOx, and Hg reductions increases as the marginal cost of carbon decreases.  <response>: Kwa kushangaza, gharama ya mwisho ya kupunguza SO2, NOx, na Hg huongezeka kama gharama ya mwisho ya kaboni hupungua. 