What will be the answer for this question?

Me and youin the summer of 1804, after meeting native americans for the first time, lewis and clark reached the eastern edge of

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

The person who has the job of maintaining order in the house is the sergeant at arms. majority whip. speaker of the house. president of the house.