Fill in the Blanks How is your English?Online version Fill in the blanks with the right word. by Esperanza Martínez Riquelme 1 born analysis biological widely living factors children race generation relationship century described years against means A is " all of the people born and at about the same time , regarded collectively . " It can also be as , " the average period , generally considered to be about thirty , during which children are and grow up , become adults , and begin to have of their own . " In kinship terminology , it is a structural term designating the parent - child . It is also known as biogenesis , reproduction , or procreation in the sciences . " Generation " is also often used synonymously with cohort in social science ; under this formulation it " people within a delineated population who experience the same significant events within a given period of time " . Generations in this sense of birth cohort , also known as " social generations " , are used in popular culture , and have been the basis for sociological . Serious analysis of generations began in the nineteenth , emerging from an increasing awareness of the possibility of permanent social change and the idea of youthful rebellion the established social order . Some analysts believe that a generation is one of the fundamental social categories in a society , while others view its importance as being overshadowed by other including class , gender , , education , among others .
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