Obsidian Cliff probably formed because the molten rock that erupted from the earth had very little water.
(Obsidian Cliff; probably formed; because the molten rock that erupted from the earth had very little water) (the molten rock; erupted; from the earth) (the molten rock that erupted from the earth; had; very little water)
Obsidian Cliff the molten rock the molten rock that erupted from the earth
probably formed erupted had
because the molten rock that erupted from the earth had very little water
from the earth
very little water