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.
The United States twenty-dollar bill ($20) is a denomination of U.S. currency. The seventh U.S. President (1829â37), Andrew Jackson has been featured on the front side of the bill since 1928, which is why the twenty-dollar bill is often called a Jackson, while the White House is featured on the reverse side.he placement of Jackson on the $20 bill may be a historical irony; as president, he vehemently opposed both the National Bank and paper money and made the goal of his administration the destruction of the National Bank.