1 It is not, and never has been, true that the Hyaenidae is a family distinguished by scavenging. 2  Of the four species alive today-the Aardwolf and the Spotted, Striped and Brown Hyaenas-only the latter two are full-time scavengers.
Social Construction of Whiteness. Race is not based on genetics. Race as a social construction. Biologization of culture replaced genetic arguments, but is equally flawed. Differences between different races defended as genetic, now debunked. Changing constructions throughout U.S. history. Whiteness is a social construction. The result of an infinite number of daily interactions between people in a society. History of de jure and de facto racial privilege and oppression in U.S. Unearned, systematic privileges accrued as a result of being white.
Flatness Tolerances. Flatness is the deviation of the surface of a sheet from a perfectly flat surface.Flatness is measured by placing a sheet on a horizontal flat surface and measuring the distance to the highest point of the sheet from the flat surface, then subtracting the material thickness.