The Pacific and North American Plates.
The California Department of Motor Vehicles is the only legal place to obtain private plates for your vehicle. You can order the plates online, through the mail or from one of their field offices. They have over two dozen offices all over the state of California.
Two
yes
In fact there are three of them: The Pacific, North American and Cocos plates.
I'm pretty sure number plates are displayed on both the front and rear in California, so two.
Pacific and North American Plate
The San-Andreas fault line.
California is primarily situated on the Pacific Plate and the North American Plate. The boundary between these two tectonic plates is marked by the San Andreas Fault, which is a major transform fault that contributes to the region's seismic activity. The interaction between these plates is responsible for many earthquakes in California.
it doesnt
Magma seeps up through the two plates from the mantle and form volcanos.
The Southern part of California is on the Pacific plate and the Northern part of California is on the North American plate.
California is primarily located along the boundary of the Pacific Plate and the North American Plate. The San Andreas Fault, a major geological feature in California, marks the boundary between these two plates, where they slide past each other. This interaction is responsible for much of the seismic activity in the region.