original: the lithosphere is underlain by the asthenosphere , the weaker , hotter , and deeper part of the upper mantle .
simplifications: the lithosphere is on top of the asthenosphere , the weaker , hotter , and deeper part of the upper mantle . the lithosphere is seen under the asthenosphere which is the hotter , weaker and deeper part of the upper mantle . the lithosphere is above the asthenosphere , which is weaker , hotter , and deeper . the lithosphere is underlain by the asthenosphere which is a deeper and hotter part of the upper mantle . the lithosphere is underlain by the asthenosphere , the weaker , hotter , and deeper part of the higher mantle . the lithosphere is underlain by the asthenosphere , the weaker , hotter and deeper part of the upper mantle . the lithosphere is underlain by the asthenosphere , the weaker , hotter and deeper part of the upper mantle . the lithosphere is underlain by the asthenosphere , the weaker , hotter , and deeper part of the upper mantle .