Joseph McCarthy gained public attention by
defeating Dwight Eisenhower in the 1956 election.
criticizing the Supreme Court ruling in the Rosenberg case.
refusing to cooperate with a HUAC investigation.
claiming to have a list of communists in the government.

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