All of these places, the magazine reports, conform to data that shows the preponderance of urban growth taking place outside the old urban cores. But in its sweeping claim of a âgreat suburbanization,â the report seems to sidestep a central question: What is a suburb, anyway?
Oxygen saturation (symbol SO2) is a relative measure of the amount of oxygen that is dissolved or carried in a given medium.It can be measured with a dissolved oxygen probe such as an oxygen sensor or an optode in liquid media, usually water. The standard unit of oxygen saturation is percent (%).n medicine, oxygen saturation refers to oxygenation, or when oxygen molecules (O 2) enter the tissues of the body. In this case blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood.
Oxygen is an element with the chemical symbol O and atomic number 8. Oxygen is a very reactive element that easily forms compounds such as oxides. Under standard temperature and pressure conditions two oxygen atoms join to form dioxygen (O 2), a colorless, tasteless and odorless gas.Oxygen is essential to human life, it is found in the air we breathe and the water we drink (H 2 0).zone (O 3) is an allotrope (different form) of oxygen that combines three oxygen atoms together. While ground level ozone is an air pollutant, the ozone layer in the Earthâs upper atmosphere provides protection from the suns harmful rays by filtering UV light.