Warning Signs. While a bottleâs stamped expiration date generally confirms waterâs freshness, certain physical signs may still suggest spoilage. A bent or deformed bottle indicates its overexposure to sunlight, while a strange aroma or flavor denotes staleness. Occasionally, algae may form in bottled water.
mobility (mÉÊËbÉªlÉªtÉª) n 1. (Physiology) the ability to move physically: a knee operation has restricted his mobility; mobility is part of physical education. 1  2. (Sociology) sociol (of individuals or social groups) movement within or between classes and occupations. 2  1. the quality of being mobile.
Social mobility is the movement of individuals, social groups or categories of people between the layers or strata in a stratification system.This movement can be intragenerational (within a generation) or intergenerational (between two or more generations).he categorization of people by social strata occurs in all societies, ranging from the complex, state-based societies to tribal and feudal societies, which are based upon socio-economic relations among classes of nobility and classes of peasants.