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.
Consequently, lakes are particularly susceptible to pollution such as artificial eutrophication. The main causes of eutrophication are. 1  natural run-off of nutrients from the soil and the weathering of rocks. 2  run-off of inorganic fertiliser (containing nitrates and phosphates).3  run-off of manure from farms (containing nitrates, phosphates and ammonia).lthough eutrophication is a natural process in the aging of lakes and some estuaries, human activities can greatly accelerate eutrophication by increasing the rate at which nutrients and organic substances enter aquatic ecosystems from their surrounding watersheds.