"Anywhere there’s oxygen you’re sure to find trees."

—Daniel Jackson

Oxygen is a gas that is abundant on just about every inhabitable planet. Humans require oxygen, as well as a mixture of nitrogen to survive. (SG1: "Revisions")

It would seem that sulfur-based lifeforms such as the Gadmeer do not require oxygen as they were terraforming a planet to make it suitable for them to live on. (SG1: "Scorched Earth")

Also SeeEdit

• Oxygen tank

External linksEdit

• Oxygen on Wikipedia