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...
What IS an air filter anyway? An air filter is a vital part of your homeâs forced air HVAC (heating, ventilation, and air conditioning) system. Most homes have at least two filters that stand guard over your homeâs air; their specific job is to remove bacteria and harmful particles, regularly cleansing the air.