Earths Interior and Crustal Composition

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The observed difference in density between continental crust and oceanic crust is most likely due to differences in their

Oxygen is the most abundant element by volume in the Earth's

No P-waves or S-waves are received in the shadow zone because

The most abundant element in the Earth's crust is

Which element is most abundant by mass in the Earth's crust?

A geologist who compares nonsedimentary rock samples from locations A and B would probably find that the samples from location A contain

Compared to the continental crust, the oceanic crust is

The Moho is a boundary located in zone