Understanding your blood oxygen levels when you are at rest is something that you need to do if you want to make the most of the oxygen that's entering your body. Normal blood oxygen levels for the average American is about 90 to 100 percent oxygen saturation.
Chief of State. Every nation has a chief of state, a person who serves as the symbolic leader of the country and represents the nation. In the United States, the president both leads the government and acts as the chief of state, although this is not the case in many countries.
The primary duty of the president of the United States is to make sure that all U.S. laws are carried out and that the federal government is run effectively.Although the president may not introduce new legislation-that's the duty of Congress-he does wield veto power over all bills that are approved by the legislature.he president, along with his Cabinet, helps set the tone and policy for the entire executive branch and how the laws of the United States are enforced. Legislative Duties. The president is expected to address the full Congress at least once a year to report on the State of the Union.