advanced practice nurse a registered nurse having education beyond the basic nursing education and certified by a nationally recognized professional organization in a nursing specialty, or meeting other criteria established by a Board of Nursing.
Quick Answer. The air that makes up Earth's atmosphere contains 20.9 percent oxygen. This is true up to about 70,000 feet above sea level. However, above 10,000 feet, the atmosphere becomes too thin to support human life, even though its proportions do not change much. Continue Reading.
nitrogen makes up 71% of the air and oxygen makes up 21% of the air and the other 1 percent are argon with 0.93 % carbon dioxide with .038% neon with .0018% helium with .00052 â¦ % methane with .00015% krypton with .00011% and hydrogen with .00005%.hat is the percentage of oxygen and nitrogen in air? Dry Air is composed of approximate 20.95% oxygen and 78.08% nitrogen, along with 0.93% argon and 0.04% trace gases.