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
Precious (given name) Precious (given name) Precious is a predominantly feminine given name derived from the English word meaning "of great worth." It is also in occasional use for males. It first appeared in the top 1,000 most popular names for girls in the United States in 1978, when it ranked at 989. It was ranked in the top 500 names given to newborn American girls between 1987 and 2002. It has since fallen in popularity and was last ranked in the top 1,000 names for girls in 2010. In 2011, there were 195 newborn American girls given the name; in 2012 there