The historic movement of upper-class and caucasian populations out of us inner cities has been nicknamed a. class diffusion b. class migration c. white flight d. white transference

I think the answer is C. white flight

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.