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 change of position within the stratification system. A move in status can be upward (upward mobility), or downward (downward mobility). Social mobility allows a person to move to another social status other than the one he or she was born in. Social mobility is more frequent in societies where achievement rather than ascription is the primary basis for social status.