Complete the story:
First, read the story. You must then finish the story in 2-3 sentences. Your story must make sense and explain how Dr. Jackson figured out how old the fossilized femur was.
Dr. Montana Jackson, paleontologist extraordinaire, uncovered a fossilized femur at a dig site. Unfortunately, there was no other readily available evidence to tell him from what time period the femur came. There were few other bones, and no fossilized plants. But Dr. Jackson had an idea.