The most important use of oxygen is in respiration. Oxygen is of great importance in the chemical and the iron and steel industries.Its other major use is in steel production â¦ , for example in the Bessemer process. The oxyacetylene torch is another important industrial application.ts other major use is in steel production, for example in the Bessemer process. The oxyacetylene torch is another important industrial application. Oxygen is utilized in medicine in the treatment of respiratory diseases and is mixed with other gases for respiration in submarines, high-flying aircraft, and spacecraft.
Ireland is known as the Emerald Isle. Green is traditionally worn on St. Patrick's day to honor the Emerald Isle. Tradition holds that on that day, people who do not wear green are pinched as a reminder to wear green to honor the Emerald Isle.
St. Patrick's Day was originally a Roman Catholic holiday celebrating Ireland's patron saint and observed only in Ireland; it was not until the 1700's when Irish immigrants in the U.S. started the first St. Patrick's Day Parade in New York City.The March 17th tradition of wearing green is explained in differing ways.t. Patrick's Day was originally a Roman Catholic holiday celebrating Ireland's patron saint and observed only in Ireland; it was not until the 1700's when Irish immigrants in the U.S. started the first St. Patrick's Day Parade in New York City.