Final answer:
The purpose of the body farm is to study the decomposition of human remains in various environmental conditions for criminal investigations and forensic training.
Step-by-step explanation:
The purpose of the body farm is to study the decomposition of human remains in various environmental conditions. These facilities, also known as forensic anthropology research facilities, allow scientists to gather data and perform experiments to better understand the processes and factors that affect decomposition. The information gained from body farms can be used to assist in criminal investigations, identify missing persons, and train forensic anthropologists and law enforcement personnel.