The symbol is also an Ancient Egyptian hieroglyph which represents the hieroglyph Â´nh (ankh) meaning life or breath of life. The glyph appears in an incredible number of inscriptions and was often used as a decorative device.
Some of the common summer viruses-- in particular the enteroviruses that can cause diarrhea and the well known hand-foot-mouth disease-- are easily acquired from other children who swim in the same pool. Drinking too much pool water can also cause diarrhea because of the chlorine. Although swallowing some pool water is inevitable, teaching a child proper technique in the water may save you from having to deal with this intestinal complaint.
Chlorine and chlorine-based compounds are the only disinfectants that can efficiently kill microorganisms during water treatment, and maintain the quality of the water as it flows from the treatment plant to the consumer's tap.ecently, though, scientists have studied how chlorine affects the cell walls of gram-negative bacteria, organisms including those causing typhoid fever, dysentery, cholera and Legionnaires' disease. By definition, gram-negative bacteria possess cell walls that consist of an outer membrane and a cytoplasmic membrane.