People seemed to like the last one, so here's another short form on the harmful problem on eutrophication ... that collided with US tanker in North Sea towed to Scottish port of Aberdeen Dozens ...

Sea Levels, Land Levels and Tide Gauges ... et al. National Estuarine Eutrophication Assessment: Effects of Nutrient Enrichment in the Nation's Estuaries. National Ocean Service, NOAA, Silver ...

Freshwater ecosystems require adequate oxygen levels to sustain aerobic life and maintain healthy biological communities.

Eutrophication is a leading cause of impairment of many freshwater and coastal marine ecosystems in the world. Why should we worry about eutrophication and how is this problem managed ...

Tiny plankton in the sea absorb the mercury compounds ... but not by poisoning. The steps in eutrophication are shown in the animation below.