noun
the upper layer of the Earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur
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The asthenosphere is a layer of the Earth's mantle that lies beneath the lithosphere.
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I heard that the asthenosphere is like a squishy layer underneath the hard outer shell of the Earth.
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The asthenosphere is basically the Earth's gooey center.
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Just like the asthenosphere allows the tectonic plates to move, sometimes we need to be flexible and adaptable in our own lives.