2.
Oxygen - Wikipedia, the free encyclopedia- Properties of the element, including its history, applications, and characteristics. ... Oxygen (pronounced /ˈɒksɨdʒɨn/, from the Greek roots ὀξύς (oxys) (acid, ...
- http://en.wikipedia.org/wiki/Oxygen
3.
oxygen: Definition from Answers.com- oxygen n. ( Symbol O ) A nonmetallic element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O 2 , and in many
- http://www.answers.com/topic/oxygen
4.
Oxygen- History, sources, forms, compounds, and isotopes. ... The behavior of oxygen and nitrogen as components of air led to the advancement ...
- http://periodic.lanl.gov/elements/8.html
5.
It's Elemental - The Element Oxygen- The Element Oxygen - Basic Physical and Historical Information ... Oxygen is the third most abundant element in the universe and makes up nearly 21 ...
- http://education.jlab.org/itselemental/ele008.html
6.
Oxygen - New World Encyclopedia- Oxygen (chemical symbol O, atomic number 8) is the second most common element on ... The Earth's oxygen continually cycles through the atmosphere, biosphere, and ...
- http://www.newworldencyclopedia.org/entry/Oxygen
8.
The Real Story Behind Oxygen Therapy- The Truth About Oxygen Therapy: Positive Outcomes for Cancer Research: Hypoxia and Lung Disease: ... Oxygen therapy is quickly becoming one of the most ...
- http://www.vanderbilt.edu/AnS/psychology/health_psychology/oxygen.htm
9.
Breathing gas - Wikipedia, the free encyclopedia- Air is a mixture of 21% oxygen, 78% nitrogen, and approximately 1% other trace ... Pure oxygen is mainly used to speed the shallow decompression stops at the end ...
- http://en.wikipedia.org/wiki/Breathing_gas
10.
Oxygen - Psychology Wiki- Oxygen (IPA: /ˈɒksidʒən/) is a chemical element with the chemical symbol O and ... At standard temperature and pressure, oxygen exists as a diatomic molecule with ...
- http://psychology.wikia.com/wiki/Oxygen
