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.
SPECIALISED CONNECTIVE TISSUES. 1  dense regular connective tissue which is found in tendons and ligaments, and is shown below. 2  cartilage - (see the topic on bone and cartilage). 3  adipose tissue (see adipose cells). 4  haemopoietic tissue (bone marrow, lymphoid tissue). 5  blood (see the topic on blood). 6  bone (see the topic on bone and cartilage).