Question

the uppermost layer of earth crust

Answer 1

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . Theasthenosphere is the part of the mantle that flows and moves the plates of the Earth.



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Answer 2

Hey.... here is your answer.
The uppermost layer of earth crust is called Lithosphere.
Hope it helps you.