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.
Given that Ireland has the reputation as the Emerald Isle, green was adopted as the national color and appears on the Irish flag. The wearing of green on St. Patrickâs Day became popular sometime in the 19th century and was a statement of solidarity with the Irish-American community, according to National Geographic.arades. St. Patrick'sâ Day parades are part of almost every major holiday celebration in Ireland and beyond. The first St. Patrickâs Day parade was held in 1762 in New York City and was meant to honor St. Patrick.