Why did you consider it an experience that lacks self-discipline

The mosaic like this one was made from

Which is the best description of a scorched earth policy? the burning of fields in preparation for planting the destruction of an opponent’s resources the mobilization of a nation’s resources in war the effort to switch from farming to manufacturing

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