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.
In 1762, the first New York City parade took place. It wasnât until 1798, the year of the Irish Rebellion, that the color green became officially associated with the day, Casey says. Up until the rebellion, the color associated with St. Patrick was blue, as it was featured both in the royal court and on ancient Irish flags. But as the British wore red, the Irish chose to wear green, and they sang the song âThe Wearing of the Greenâ during the rebellion, cementing the colorâs relevance in Irish history.