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.
One of the most important members of any organization is the president. The presidentâs duty is to preside over all meetings and events, including some for the general public. For the latter, the president will ensure all events run smoothly so the organization maintains a good image.