Which reasons do people give for immigrating to the United States?

Choose all answers that are correct.

to give their children a better future

to search for freedom

to buy land

to have more economic opportunities

to enjoy democracy

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