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Exercise 1 is worth ten points.
Background:
Mercury is a heavy metal that occurs naturally in minerals and rocks. Release of mercury from natural sources has been relatively constant over time. However, anthropogenic release of mercury has increased significantly in recent years, primarily due to increased fossil fuel mining and combustion. Mercury that is released into the air eventually ends up in soils or surface water.Exercise:
Discuss any two environmental concerns of having mercury pollution in the air, soils, and surface water.
Exercise 2 is worth ten points.