three or four not sure
granite, quartzite, dolomite and other rocks, basalt
Tarmac, Hot rolled ashphelt with inlaid stonechippings.
2 layers of lipids.
A leaf is made of many layers that are sandwiched between two layers of tough skin cells
It's just how it's made.
it has 7 layers!!
A rock column is made of many rock layers.
7-8 layers
they were smart by building their roads with several layers of construction with proper drainage at the sides.
3
2 layers of lipids.
3
A leaf is made of many layers that are sandwiched between two layers of tough skin cells
8 ;airs
8 ;airs
The roads that the Tudors used were built by the Romans, and many roads that we have in the UK today, follow the same original foundations
It's not about how many layers of clothes they wear, it's how the layer is made. In Antarctica, each layer of clothing is usually several other layers stitched together to keep as much heat heat as possible. It also depends on what material is used. During my year at South Pole Station, my outdoor clothing would be a parka, button-in liner, wool shirt, thermal underwear. The parka had a outer shell, insulating filler, inner shell - so that is 3 layers right there. The liner was also 3 layers. So there were usually 8 layers of material plus trapped air pockets between my skin and the very cold environment. It was about the same for the footwear.
Plywood is made up of many different layers. These individual layers are called "piles" or "veneers".
It's just how it's made.