no friken clue
Lamellae are the layers that form concentric rings within the Haversian systems that make up bone tissue.
2 layers
a volcano has about 6-10 layers
Bones are composed of multiple layers, including the periosteum (outer layer), compact bone (dense, strong layer), spongy bone (porous inner layer), and bone marrow (innermost layer where blood cells are produced). These layers work together to provide structure, support, and protection to the body.
I think 4
four
The construction of a BJT is very simple - it is three alternating layers of semiconductor.
alot
Bone contains high amounts of Calcium and Iron. There are many others however I am not certain what they are.
The tiny units that make up bone are called osteons.
the layers that make up the heart are the tunica externa, tunica media, and tunica interna.
The three main layers that make up Earth is:CORE, MANTLE, and the CRUST