Which of the following american legal practices did not come from the roman law of nations? a. a person is considered innocent until proven guilty. c. judges are obligated to weigh all the evidence. b. a person accused of a crime has a right to defend him/herself in front of a judge. d. a person accused of a crime has the right to an attorney.

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