Linked from
The 13 pages that link to Asthenosphere, each with the reason it gives.
Plate tectonicsRelated: Its low mechanical strength is what makes plate motion physically possible.
Pacific PlateRelated: The plate moves over this underlying mantle layer.
North American PlateRelated: Its deformation helps accommodate the motion of the plate above it.
Tectonic plateRelated: Its ability to flow slowly allows rigid plates to move above it.
Australian PlateRelated: Its slow deformation allows the overlying plate to move.