Usage:the pervasiveness of the odor of cabbage in tenement hallways
Usage:he was surprised by the prevalence of optimism about the future
Usage:a teacher must have a breadth of knowledge of the subject
Usage:You cannot generalize from few experiences that all men are chauvinists.
Usage:Delegates of the conference displayed their works of erudition in the poster session.
Usage:We used the public library extensively.
Usage:Deforestation is globally effecting the ecological balance.