n the 1968 presidential campaign, Richard Nixon called for Group of answer choices stability and national law and order. an immediate withdrawal of American military forces in Vietnam. the diplomatic recognition of China. an end to the Cold War with the Soviet Union.

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