The overall specific gravity of the earth is much higher than the specific gravity of crustal rocks which means the earth is about twice as heavy as the rocks on the surface would suggest. Iron meteorites are thought to have the same composition as the average earth, and the meteorites contain a lot more iron than the Earth's surface rocks.
The <span>natural formation that divides France from Germany is: The Rhine river
Rhine River has the length around 1,233 Kilometers and flows through 6 countries in Western Europe and divides three of those nations, Switzerland, France, and Germany.</span>