P-waves travel faster than S-waves ____. A)under all ...

[Zulu123]

P-waves travel faster than S-waves ____.
 A)under all circumstances
 B)only when the earthquake is generated in Earth's core
 C)when the ground surface is dense and elastic
 D)when both waves pass through liquid
 E)only when Earth's density increases with depth

Question 2

How did the Cenozoic conditions of eastern and western North America differ?

[sierramartinez]

Answer to Question 1

A

Answer to Question 2

The east was dominated by erosion, while in the west, tectonism yielded a number of basins that became the sites of sediment deposition.

[Zulu123]

Excellent

[Dnite]

Gracias!