How can air pollution affect aquatic ecosystems?

In aquatic ecosystems, effects of acidity, nitrogen, and mercury on organisms and biogeochemical processes are well documented. Air pollution causes or contributes to acidification of lakes, eutrophication of estuaries and coastal waters, and mercury bioaccumulation in aquatic food webs.

Answer: Air pollution or Air pollutants such as sulfur can lead to excess amounts of acid in lakes.