Oxygen was a gas that humans and many other species breathed.[2] However, some species did not breathe oxygen, such as the Kel Dors,[3] the Gand,[4] and the Morseerians.[5] Planets with oxygen-rich atmospheres, referred to as "Type I atmospheres,"[6] included Naboo, Tatooine, and Coruscant, among many others.[source?]
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