Earth First! Earth First! is a radical environmental advocacy group that emerged in the Southwestern United States in 1979. It was co-founded on April 4, 1980 by Dave Foreman, Mike Roselle, Howie Wolke, Bart Koehler, and Ron Kezar.
A eutrophic body of water, commonly a lake or pond, has high biological productivity. Due to excessive nutrients, especially nitrogen and phosphorus, these water bodies are able to support an abundance of aquatic plants. Usually, the water body will be dominated either by aquatic plants or algae.
There are two types of eutrophication: natural eutrophication and anthropogenic eutrophication. Eutrophication is widespread in freshwater ecosystems, and it plays a major role in the normal aging process of many ponds and lakes. The main cause of anthropogenic eutrophication is human activity. Nutrients from fertilized fields, lawns, and farms are deposited in rivers, streams, lakes and oceans when it rains.