1) The is a region of hot, slow-flowing, solid rock between the core and the crust. 2) The is the densest compositional layer and makes up one-third of Earth's mass. 3) The is the outermost, rigid physical layer of Earth. 4) The model shown is of Earth's (physical/compositional) layers. 5) The layer is made mostly of iron and nickel. 6) The differences between the inner core and the outer core are 7) The difference between the lithosphere and the crust is 8) The rock made up of magnesium and smaller amounts of aluminum and silicon might help scientist study the layer. 9) The atmosphere would be classified as because​