Here's a breakdown:
* Crust: The outermost, solid layer of Earth. It's relatively thin and is divided into oceanic crust (denser, made of basalt) and continental crust (less dense, made of granite).
* Mantle: The layer beneath the crust, extending to about 2,900 kilometers deep. It's mostly solid rock, but behaves like a very viscous fluid over long periods.
* Lithosphere: This is the rigid outermost layer of Earth that includes the crust and the uppermost part of the mantle. It's broken into tectonic plates that move and interact, causing earthquakes and volcanic activity.
So, the lithosphere is the layer that combines the crust and the uppermost mantle.
