The spoils system led to which problem?

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

Will give brainlist need this answer asap which of the following groups made up the majority of those involved in the progressive movement? a) politicians b) farmers c) middle class d) factory worked

Read this list: a. it was established by president barack obama. b. it makes it easier for all americans to access health care. c. it was part of the great society. d. it was part of the new deal. e. it provided a guaranteed income to poor americans. which options are characteristics of the affordable care act?