In severe cases, the viral infection causes a high fever, bleeding into the skin, and necrosis (death) of cells in the kidney and liver. The damage done to the liver from the virus results in severe jaundice which yellows the skin. Hence, the yellow in yellow fever..
filter definition: The definition of a filter is something that separates solids from liquids, or eliminates impurities, or allows only certain things to pass through. (noun) A Brita that you attach to your water faucet to remove impurities from you...
A sand filter and a pool pump are two separate entities not one. A sand filter is just that === a filter. period. The pump or circulating pump-not a sand filter pump-is just what the name implies --- a pump -- it pumps water. period. Converting to a salt system has nothing to do with wither the pump or the filter.