Generally, as levels of pollution are reduced

Question

Quizplus · Accepted Answer

As pollution levels are reduced, the initial reductions are typically the most beneficial, addressing the most harmful or easiest-to-remedy pollution first. As pollution continues to decrease, the marginal benefits (or the additional benefits from reducing pollution by one more unit) tend to decrease because the most critical issues have already been addressed, and further reductions target less critical problems.

Generally, as Levels of Pollution Are Reduced