Not to be confused with effectiveness and efficacy. For other uses, see efficiency (disambiguation). Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste.
Marengo, Iowa. Marengo is a town in and the county seat of Iowa County, Iowa, United States. It has served as the county seat since August 1845, even though it was not incorporated until July 1859. The population was 2,528 in the 2010 census, a decline from 2,535 in 2000.
IAGenWeb Project & Submitters. All rights reserved. Cherokee county, Iowa, lies in the northwestern part of the present State of Iowa. It is within the Missouri River Basin and, in terms of topography and climate, lies in the transition zone between the woodland prairies and the high plains.