Final answer:
Earth's lithosphere is broken into separate sections called tectonic plates, which are constantly moving due to mantle convection.
Step-by-step explanation:
The sections that Earth's lithosphere is broken into are called tectonic plates. The lithosphere, which is the solid outer shell of the Earth, consists of about a dozen tectonic plates that fit together like puzzle pieces. These plates are constantly moving, either apart or being forced together, due to the slow convection of the mantle.
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