well luckily for you I live in Alaska and it is the Yukon River
Supply and demand!
If you want a lot of something cause its in high demand.
Answer:
Paleomagnetism also provides evidence to support theories in plate tectonics. Because the ocean floor is mostly composed of basalt, an iron-rich substance containing minerals that align with the magnetic field, they record the alignment of the magnetic fields surrounding oceanic ridges.
