The MCA curve, with the level of pollution emissions on the horizontal axis and the dollar cost per units of emissions on the vertical axis,

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    slopes downward because the value of pollution reduction decreases as the amount of pollution increases.
     slopes upward, because as pollution increases, the marginal cost of abatement increases.
     slopes downward, because at lower levels of pollution, when emission abatement has been large, the marginal cost of reducing pollution further becomes more and more costly.
     slopes upward, because as the level of emission abatement increases, the marginal cost of abatement increases.
asked Jun 2, 2013 in Economics by anonymous
    

1 Answer

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slopes downward, because at lower levels of pollution, when emission abatement has been large, the marginal cost of reducing pollution further becomes more and more costly.
answered Jun 3, 2013 by Xyz ~Expert~ (3,650 points)

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