The three layers that I could think of are User interface, Client side, and server side.
The three main layers that make up Earth is:CORE, MANTLE, and the CRUST
crust mantel core the three main layers
the core, the mantle and the crust
the three main types of folds are anticlines, synclines, and monoclines.
The three main layers that make up Earth is:CORE, MANTLE, and the CRUST
Crust, mantle, and core
Crust, mantle, and core
Skin usually has three main layers - the exterior epidermis; the middle dermis; and the interior hypodermis.
Crust, mantle, and inner core.
crust mantle and outer core
The operating system is the Main program that runs the applications. Think of you as the "operator" of the car, and the car is the application. You control the car to go.
Operating systems are designed with a series of layers. The three main layers are the user level, the system level including administration, and the kernel level that includes hardware.