If such an isotope existed, which one would be best to use for establishing the age of an archeological site that is about 50,000 years old?.

Lakita wants to get a degree in accounting so that she can become a cpa. she has decided to take classes online, however, because she is very timid about going to a class with 30 other students where she might be expected to speak out. she is afraid that if she says something silly, gives a wrong answer, or just acts in an inappropriate way she will be shamed in front of others. lakita has always struggled with this problem, and has thus lived as relatively isolated life for quite a few years. lakita might be diagnosed as having: antisocial personality disorder.negativistic personality disorder.avoidant personality disorder.schizoid personality disorder.