Phosphorus is most abundantly seen in the body as a constituent of the molecule phosphate, one of the bone salts which add structural rigidity to the softer protein matrix of bone and teeth. Perhaps phosphorusâ most important metabolic role is as a constituent of the molecule phosphate.
Structural mobility refers to change in society that allows large numbers of people to move up or down the class ladder. Structural mobility has also taken place between my grandmother, my mother, and me. My mother moved up the social class ladder because she was more successful than her mother.
Social mobility refers to the movement of individuals or groups in social position over time. Most commonly, social mobility refers to the change in wealth and social status of individuals or families. However, it may also refer to changes in health status, literacy rate, education, or other variables among groups such as classes, ethnic groups, or countries.