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Ultrasonic algae control is a commercial technology that has been claimed to control the blooming of cyanobacteria, algae, and biofouling in lakes, and reservoirs, by using pulsed ultrasound. [ 6 ] [ 7 ] The duration of such treatment is supposed to take up to several months, depending on the water volume and algae species.
The Tennessee Division of Archaeology maintains a database of all archaeological sites recorded within the state of Tennessee.As of January 1, 2009 this catalog contains more than 22,000 sites, including both prehistoric and historic resources.
Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United ...
Health. Home & Garden
There are many reasons why underwater archaeology can make a significant contribution to our knowledge of the past. In the shipwreck field alone, individual shipwrecks can be of significant historical importance either because of the magnitude of loss of life (such as the Titanic) or circumstances of loss (Housatonic was the first vessel in history sunk by an enemy submarine).
Most feed on algae, but many are detritivores and some are filter feeders. Freshwater snails are indirectly among the deadliest animals to humans, as they carry parasitic worms that cause schistosomiasis, a disease estimated to kill between 10,000 and 200,000 people annually. [1] [2]
An underground house in the Sassi di Matera, Italy An underground jewellery shop in Coober Pedy An example of an excavated house in Brhlovce, Slovakia. Underground living refers to living below the ground's surface, whether in natural or manmade caves or structures (earth shelters).
Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, according to research that provides some of the best evidence to date that ...