* Plate tectonics are active: This is where the Earth's crust is constantly moving and colliding. The majority of volcanoes are found along the edges of these plates, where one plate slides under another (subduction zones) or where plates move apart (divergent zones).
* Hotspots: These are areas within the Earth's mantle where plumes of unusually hot magma rise towards the surface. They can create volcanoes even in the middle of tectonic plates, like the Hawaiian Islands.
So, while volcanoes don't "live" in the traditional sense, they are found in specific areas where the Earth's geology is active and allows magma to reach the surface.