Final answer:
The parts of Earth's mantle are the lithosphere, asthenosphere, and mesosphere.
Step-by-step explanation:
The parts of Earth's mantle are the **lithosphere**, **asthenosphere**, and **mesosphere**. The **lithosphere** is the outermost layer of the mantle and is rigid and divided into tectonic plates. Beneath the lithosphere is the **asthenosphere**, which is semi-molten and allows for the movement of the tectonic plates. The **mesosphere** is the lowermost part of the mantle and is solid.
Learn more about Earth's mantle