Linked from
The 36 pages that link to Volcanism, each with the reason it gives.
LithosphereRelated: Lithospheric fractures and plate boundaries provide routes for magma to rise.
GeologyRelated: Volcanism builds new rock and alters landscapes at plate boundaries and hotspots.
Rock cycleRelated: Volcanism returns material from Earth's interior to the surface as lava and ash.
Hot springRelated: Volcanic heat powers many, but not all, hot spring systems.
MountainRelated: Repeated eruptions can build volcanic mountains above the surrounding terrain.
Land (terrain)Related: Volcanic eruptions add new rock and can create islands and plateaus.
GeodynamicsRelated: Its distribution records melting and material transport within the planet.