Cyanotoxin which is why they are usually green or blue. Cyanobacteria are found almost everywhere; in oceans, lakes and rivers as well as on land. They flourish in Arctic and Antarctic lakes, hotsprings and wastewater treatment plants. They even inhabit the fur of polar bears, to which they impart a greenish tinge. Cyanobacteria produce potent toxins, but they also produce helpful bioactive compounds, including substances with antitumour, antiviral, anticancer, antibiotic and antifungal activity, UV protectants and specific inhibitors of enzymes. Cyanotoxins are often implicated in what are commonly called "red tides" or "harmful algal blooms". Lakes and oceans contain many single-celled
Great Lakes Aircraft Company is what most people recognize first when looking at a Sport Trainer. At its peak, Great Lakes had as many as 650 deposits for new aircraft. With the onset of the great depression, the Great Lakes Aircraft Company went out of business closing their doors in 1936. The company built just 264 of the Sport Trainers ordered. As the years went by, the original Cirrus engine installation was replaced by Warner radials, inline Menascos or Fairchild-Rangers, and horizontally-opposed Lycomings, Franklins, or Continentals. Tex Rankin, a stunt pilot of the 30s and 40's, made the Great Lakes Sport Trainer famous. He