A variation can mean something that is slightly different from similar items of its type (also a variant or variety). It can also apply to a difference itself (e.g. a variat â¦ ion in temperature). In mathematics, variation is the function that compares values among variables.
Cartilage is a type of elastic connective tissue which acts as rubber-like padding to cover and protect the ends of bones at joints. It is a dense matrix of elastic and collagen fibers which are embedded in rubber like ground substance.
CARTILAGE. 1  is a specialised type of connective tissue. 2  consists, like other connective tissues, of cells and extracellular components. 3  does, unlike other connective tissues, not contain vessels or nerves. 4  is surrounded by a layer of dense connective tissue, the perichondrium.