You could produce oxygen and hydrogen from the water ice and the carbon dioxide cold traps on the Moon. There may also be more carbon below the surface, see ht

You could produce oxygen and hydrogen from the water ice and the carbon dioxide cold traps on the Moon. There may also be more carbon below the surface, see https://phys.org/news/2020-05-carbon-emissions-moon-theory-birth.html https://phys.org/news/2020-05-carbon-emissions-moon-theory-b...