Oxygen is a gaseous element common in the atmosphere of Class M planets, although at relatively low levels (about 20% on Earth, for example).

Oxygen is vital for the survival of most carbon-based lifeforms. Some lifeforms, however, have adapted to go without oxygen for extended periods of time, such as Fantome from the Void, who had a very large lung capacity. (VOY: "The Void")

During a scan of Aldean DNA, Doctor Beverly Crusher was able to confirm that a drop in atmospheric O₂ was not responsible for the Aldeans' sterility. (TNG: "When The Bough Breaks")

One species, the Benzites, can not breathe the oxygen-nitrogen atmosphere deemed "normal" by most Federation species. (TNG: "Coming of Age")

When Kira Nerys and Doctor Julian Bashir beamed aboard the Kobliad transport ship Reyab, Bashir noted that the vessel's O₂ pressure levels were dropping. (DS9: "The Passenger")

In 2369 the runabout USS Ganges returned from a routine mission in the Gamma Quadrant to Deep Space 9 because due to a power failing their life support and oxygen levels dropped dangerously low. (DS9: "Q-Less")

After the alien probe "Pup" damaged most of the station's systems in 2369, a plasma fire occured in a corridor in the habitat ring. Major Kira Nerys gave Lieutenant Jones the order to bring portable oxygen and something to treat plasma burns. (DS9: "The Forsaken")

Oxygen is also a critical component of life support functions aboard most space-going craft.

Materials containing oxygen Edit

• carbon dioxide
• carbon monoxide
• clancium oxide
• deuterium oxide
• dilithium hydroxyl
• DNA
• ferric oxide
• hydroxyl
• iridium oxide
• methyl oxide
• nitrogen tetroxide
• nitrogen oxide
• nitrous oxide
• veridium oxide
• water

External link Edit

• Oxygen at Wikipedia