Somebody murdered a dark-haired prepubescent girl in the area last year and left her mutilated body near the train tracks. This year, another dark-haired girl of about the same age was murdered and her body was left near the train tracks in the same general area. Based on what you have learned from the text, was this the work of a serial killer

Not conclusive because there were less than 3 cases with similarities

Explanation:

Serial killers

This is a term used for murderers. They are people who kill three or more people in separate occasions or events and usually have a time- off ( usually called cooling-off period) between murders. They simply kill 3 or more people in over a month or more.

Types of Killers

1. Visionary

2. Missionary

3. Hedonistic

4. Power/Control

General Characteristics of killers

They are often male, ages 25-35, different intelligence based, from all types of society, kill for the sex, power, manipulation, domination and control etc.

General Characteristics of the victims

These killers usually kills within their ethnic group, ages varies, no prior contact or hatred for the victim, the victims can be symbolic.

the answer to your question is,

old stone age.

-mabel < 3