
air007pollution.blogspot.com
Save Our AirWednesday, July 8, 2009. The composition of air. Air is what we need to breathe. It is approximately 21% oxygen with the remainder mostly nitrogen with a very small amount of various gases thrown in at the end. The most important aspect of air is the 21% oxygen. At sea level, this gives our bodies approximately 95% oxygen inhalation which is what we need for metabolism and survival. Air is always 21% oxygen, but percent is a portion of something. Labels: The composition of air. 1-One class of articles is...
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