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A crewman on board a World War 2 Royal Air Force Vickers Wellington bomber. The container to the right of him is the aircraft's "Elsan" chemical toilet (1939–1941) Early aircraft fitted with a toilet include the 1919 Handley Page Type W, the 1921 DH.29 Doncaster and the 1921 Caproni Ca.60. [1]
A fish with swim bladder disorder can float nose down tail up, or can float to the top or sink to the bottom of the aquarium. [ 2 ] Swim bladder disease is a very common illness within aquarium fish that results in the bladder not functioning properly causing the fish to swim upside down.
Fish products have been shown to contain varying amounts of heavy metals, particularly mercury and fat-soluble pollutants from water pollution. Species of fish that are long-lived and high on the food chain, such as marlin, tuna, shark, swordfish, king mackerel and tilefish contain higher concentrations of mercury than others. [4]
The astrological symbol for the planet became one of the alchemical symbols for the metal, and Mercury became an alternative name for the metal. Mercury is the only metal for which the alchemical planetary name survives, as it was decided it was preferable to quicksilver as a chemical name.
Of the groups shown in the table, 49 per cent of the children, 26 per cent of the female passengers, 82 per cent of the male passengers and 78 per cent of the crew died. The figures show stark differences in the survival rates between men and women, and of the different classes aboard Titanic, especially among women and children. Although less ...
Ocean acidification means that the average seawater pH value is dropping over time. [1]Ocean acidification is the ongoing decrease in the pH of the Earth's ocean.Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [2]
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