Which of these is an demographic shift that have resulted from china one child policy

Which of these is true of that temperance movement at the beginning of the 1800’s in america?

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

Pls quickly! which of the following statements about spanish plantations is not accurate? a. spanish plantation screw sugarcane for export to spain. b. the spanish had a little concern for the lives of the indians who worked on the plantations. c. spanish presentation grew a wide variety of crops and sent the produce to many different european countries. d. to replace the native americans our dying off the spanish important african slaves.