What mineral discovery attracted african american people to california in 1849? copper silver gold uranium

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

Two types of resources are natural and human. true or false

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