A hiatal hernia does not cause many symptoms by itself, but when a sliding hernia occurs, the abnormal location of the gastroesophageal (GE) junction above the diaphragm affects its function and stomach contents can reflux into the esophagus.
-You need to work on sentence structuring. For example, when you wrote, The immigration, as a decision maked by a person is an act that occurs, because of some factors especially in the under developed countries and the most importants causes or reasons are mainly social reasons, politic reasons and economic reasons..
Examples of these push factors are job opportunities; better living conditions; political and/or religious freedom; enjoyment; education; better medical care; and security. To migrate, people place so attractive that they feel pulled toward it. Economic Push/ Pull Factors: Most immigrants migrate for economic reasons.People think about emigrating from places that have few job opportunities and they immigrate to places where jobs are most likely to be available. Ravensteinâs Law of Migration.nother push factor would be the fear of prosecution and these people would be refugees: people who have been forced to migrate from their homes and cannot return for fear of persecution. Political conditions can also operate as pull factors, especially the lure of freedom.