What does S. P.Q. R. mean?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

Cultural appropriation and the crafting of racialized selves in american youth organization

Which of the following was not a result of the industrial revolution in europe? a. the rise of a middle class b. the urbanization of europe's society advances in agriculture and industry d. the decline of europe's large cities