Dry ice, sometimes referred to as  cardice  (chiefly British chemists), is the solid form of carbon dioxide. It is used primarily as a cooling agent.Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere).It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.t is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere). It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.
Maryland is also called the Old Line State and Free State.The Old Line nickname was given during the Revolutionary War, when 400 soldiers in the First Maryland Regiment fought a British force of 10,000 and helped General George Washington's army to escape.
From the naming of the state in the 16th century to the California Gold Rush of 1848 and the fields of yellow poppies(official state flower) that bloom in the springtime, gold, in one form or another, has been intertwined with the history and development of California. The state legislature made The Golden State the official nickname of California in 1968. The Golden State is not the only nickname that has been associated with California. Over the years, California has been referred as The Land of Milk and Honey and The El Dorado State and The Grape State.. These nicknames served at various times to promote business and tourism for the state of California.