Earth about under the oceans to for the continents. The crust and the cold, rigid, top of the upper mantle are collectively known as the lithosphere, and it is of the lithosphere that the tectonic plates are composed. Beneath the lithosphere is the asthenosphere, a relatively low-viscosity layer on which the lithosphere rides. Important changes in crystal structure within the mantle occur at below the surface, spanning a transition zone that separates the upper and lower mantle. Beneath the mantle, an extremely low viscosity liquid outer core lies above a solid inner core. The Earth's inner core might rotate at a
The Word for World Is Forest Word for World Is Forest" portrays a communication gap that the protagonists are never able to bridge. Both the native Athsheans and the loggers have languages that reflect their perceptions of reality, but they are unable to find a common language. In the native Athshean language, the word ""Athshe"" means both "forest" and "world", demonstrating the close link that the Athsheans have to the forest and their planet. It is noted by Lyubov that the Athsheans believe "the substance of their world was not earth, but forest". The language used by the Athsheans during conversations similarly show their interconnectedness and