What was mohorovicics observation?
A. Seismic waves traveled at varying speeds
B. Seismic waves traveled at constant speeds
C. Seismic waves penetrated all earth's layers
D. Seismic waves could not go through the brittle crust
A. Seismic waves traveled at varying speeds
B. Seismic waves traveled at constant speeds
C. Seismic waves penetrated all earth's layers
D. Seismic waves could not go through the brittle crust