Which layer is the oldest? How do you know? Which layer is the youngest? How do you know?
Has any of the rock layers undergone metamorphism? How do you know?

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.

Which property of soil depends on the size of particles? color odor temperature texture

Suggest two reasons why irrigation is important for human development of the desert