What is the upper layer of the earth's mantle called
- What is the earth's crust and upper layer of the mantle called
- What is the combined layer of the earth's crust and upper mantle called
- What is the outermost layer of the earth made up of the crust and upper mantle called
- What is the rigid layer of the earth's surface made up of the crust and upper mantle called
- What is the layer of the earth that is made up of the crust and upper mantle called