The Mohorovicic Discontinuity, or Moho, is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity. Thanks to the discovery of the Moho and the measurements taken by Mohorovicic, we can make several
statements about the nature of the two layers, the crust and mantle, ALL BUT ONE statement could apply.
A
The two layers differ in densities.
B
The crust is brittle while the mantle is not
The two layers differ in chemical composition
D)
The depth of the crust is not uniform throughout the globe.