An organ is defined as âa group of tissues that perform a specific function or group of functionsâ. Since an artificial heart is not made up of tissues, itâs not an organ. Maybe we need to change the definition of âorganâ, but for right now, this is how it stands. Related Questions.
The symbol on the back of the U.S. dollar bill is the Great Seal of the United States. The face (obverse) of the Great Seal first appeared on the back of the $20 Gold Certificate, Series 1905. In 1935, both the face and back (reverse) of the seal appeared for the first time on paper money on $1 Silver Certificates.
There is a view, held by some typographers, that the dollar symbol derives from the abbreviation for the shilling, s, which was used in Britain, both as a coin and as a monetary unit, until decimalisation in 1971. A stroke through a letter was sometimes used to indicate that the letter was an abbreviation.