A skull from an ancient human being has 146C decay rate of 4.0 counts per minute per gram of carbon. The decay rate of 146C in living organisms is 15.3 counts per minute per gram of carbon. Calculate the age of the skull. The half life of 146C is 5730 years.

Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. which of the following tasks does she perform? a. reporting results of scientific analysis b. interviewing suspects c. questioning witnesses d. preparing victims for burial