What is microgram?
A microgram is a metric unit of mass equal to one millionth of a gram. It is used in analytical chemistry, toxicology, pharmacology, and measuring trace amounts of substances in laboratory settings.
What is short ton (US)?
A short ton is a unit of mass used primarily in the United States, equal to 2,000 pounds. It is used in industries such as mining, agriculture, and freight transportation.