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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 was vital for the survival of most carbon-based lifeforms. Some lifeforms, however, had 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")

One of the tests given at Starfleet Academy involved working in an atmosphere that was oxygen deficient. Choriocytosis produced similar symptoms to the conditions of the test. (TAS: "The Pirates of Orion")

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, could 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 due to a power failure, 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 occurred 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 was also a critical component of life support functions aboard most space-going craft. In 2374, while playing a hypothetical game with the delusion Trajis Lo-Tarik, Seven of Nine asked him to imagine that the oxygen on the bridge of the USS Voyager had been depleted and then sealed it with a level 3 force field. Later, Seven cut power to all life support in order to maintain power to the ship's stasis units, and a delusion of Captain Kathryn Janeway commented that without heat and oxygen it was "Goodbye, Seven." (VOY: "One")

Materials containing oxygen Edit

External link Edit

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