In an operating system a layered structure is composed of a kernel, some servers, and some user level libraries. All of these put together are a layered structure.
To calculate the volume of he first layer of a cube structure, simply multiply the length by the width by the height. The product gives you the total volume in the cube structure.
Upper layer of the 7 layers of the skin, the outer layer.
choroid
the outer layer
columnar
eat it.
shell structure
It isn't.
Graphite.
The outer layer of the brain is the cortex and would be referred to as a cortical structure.
The structure of the Earth relates to plate tectonics as in the Earth structure there is the mantle layer, crust layer, inner and outer layer etc. The crust layer on top of the Earth is not a solid layer, the layer the broke up into big chunks which are now called tectonic plates.
restructuring