In 2007, about how many people were living in a country that was different from the one in which they grew up? a)2,000 b)20,000 c)200,000 d)200,000,000

The answer is B)20,000. Hope this helps!

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.