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.
As chief diplomat, the president acts as leader, initiator and the guide of U.S. foreign policy. Sometimes, the president passes the chief diplomat role and responsibilities to various delegates in the state department.owers and Functions. The Constitution gives the president the powers to recognize foreign governments and make bilateral or multilateral treaties. He usually must get advice and consent of the Senate, but in some cases he makes agreements with other countries without congressional approval.