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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 ...
A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .
International English Language Testing System (IELTS ⫽ ˈ aɪ. ɛ l t s ⫽) is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP and Cambridge English, and was established in 1989. IELTS is one of the major English-language tests in ...
Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption ( drinking water ), but water purification may also be carried out for a variety of ...
Turns out she told her son Prince Louis "You stay there, okay?" and then added to Princess Charlotte, "Keep smiling and stay here for one moment." Charlotte then told a dancing Prince Louis "You ...
The history of water filters can be traced to the earliest civilisations with written records. Water filters have been used throughout history to improve the safety and aesthetics of water intended to be used for drinking or bathing. In modern times, they are also widely used in industry and commerce. The history of water filtration is closely ...
The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows the decentralized supply of clean water in emergency and disaster situations for about 400 persons per unit per day. The filter is designed to function with neither chemicals nor energy nor trained personnel.
Sono arsenic filter. The Sono arsenic filter was invented in 2006 by Abul Hussam, who is a chemistry professor at George Mason University (GMU) in Fairfax, Virginia. It was developed to deal with the problem of arsenic contamination of groundwater. [1] The filter is now in use in Hussam's native Bangladesh .