The mixture of molten rock (magma) and water that is formed erupt at the surface as spectacular explosive volcanoes, like Mt St Helens.
(water; is formed; ) (The mixture of molten rock (magma) and water; erupt; L:at the surface as spectacular explosive volcanoes, like Mt St Helens)
water The mixture of molten rock (magma) and water
is formed erupt
L:at the surface as spectacular explosive volcanoes, like Mt St Helens