The seven year's war shifted the balance of power in favor of the french dutch english prussians

Which of the following about topsoil is fake?

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.

In the diagram below dab and dac are adjacent angles