If Seismic waves that go straight thorough Earth make the trip very quickly. What does that tells us about the composition of Earth's center?

Which statement correctly describes the interaction between magnetic poles? north and south poles attract each other. north and south poles repel each other. two north poles will attract each other. two south poles will attract each other.

Based on details in the riddle of the rosetta stone, which statement best describes jean-baptiste fourier’s influence on jean-françois champollion?

Atrain flies at a speed of 350 miles per hour how far will it travel in 3 hours