Which of the following bodies of water is the largest?

Number the steps from when a stimulus is received to when the body reacts

7. according to the theory of isostasy, which statement must be true? a. the asthenosphere is denser than the lithosphere. b. the asthenosphere has the same density as the lithosphere. c. the lithosphere has the same density as the core. d. the lithosphere is denser than the asthenosphere.

Does anyone know the answers for these