The zone of the Earth's mantle located immediately beneath the lithosphere, characterized by high temperatures and semi-fluid ductile rock behavior, is called the:

💡 Solution & Explanation

The asthenosphere lies immediately beneath the lithosphere in the upper mantle, consisting of semi-fluid, ductile rock that allows lithospheric tectonic plates to slide smoothly across its surface. The rigid mesosphere lies deeper below, while the lithosphere comprises the crust and uppermost solid mantle. Convection currents originating within the asthenosphere drive continental drift and plate tectonics.