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The water fluoridation controversy arises from political, ethical, economic, and health considerations regarding the fluoridation of public water supplies . For deprived groups in both maturing and matured countries, international and national agencies and dental associations across the world support the safety and effectiveness of water ...
The Flint water crisis was a public health crisis that started in 2014 after the drinking water for the city of Flint, Michigan was contaminated with lead and possibly Legionella bacteria. [ 2] In April 2014, during a financial crisis, state-appointed emergency manager Darnell Earley changed Flint's water source from the Detroit Water and ...
Blood plasma. A unit of donated fresh plasma. Blood plasma is a light amber -colored liquid component of blood in which blood cells are absent, but which contains proteins and other constituents of whole blood in suspension. It makes up about 55% of the body's total blood volume. [ 1] It is the intravascular part of extracellular fluid (all ...
Plastic recycling is the processing of plastic waste into other products. [ 1][ 2][ 3] Recycling can reduce dependence on landfill, conserve resources and protect the environment from plastic pollution and greenhouse gas emissions. [ 4][ 5] Recycling rates lag behind those of other recoverable materials, such as aluminium, glass and paper.
Polyethylene terephthalate (or poly (ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P ), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fibre for engineering resins. [ 5]
Fluoridation does not affect the appearance, taste, or smell of drinking water.[1] It is normally accomplished by adding one of three compounds to the water: sodium fluoride, fluorosilicic acid, or sodium fluorosilicate. Sodium fluoride(NaF) was the first compound used and is the reference standard.[35]
Traditional Champagnes made in the Champagne region of France are too pricey for our under-$15 a list. These three are the next best thing to capture the smoothness and balance of French bubbly. 1 ...
With rising demand, the quality and supply of water have diminished. [7] Water use has been increasing worldwide by about 1% per year since the 1980s. Global water demand is expected to continue increasing at a similar rate until 2050, accounting for an increase of 20–30% above 2019 usage levels. [6]