Why was the irregular shape to the sternum of the two victims significant in the case?

to compare

Explanation:

The shape offered evidence to the case. This would prove the case and provide a strong evidence to the case. Therefore, the samples were essential in the analysis.

Generally forensic anthropologist  use biological profile from bone examination to give clues  about the identity of victim,duration of crime, and the position of the victim and  history of  violence in the victim.

Thus comparison of   irregular shape of the sternum may indicate history of violence in the victim,or even the actual cause of the incident, or the positioning .

it can  also give a clue for investigating the crime. deviation from the normal shape of the sternum  may be an  indication of trauma  at the region.

Besides the irregularity in sternum shape  may also give a clue about the positioning of the body of the victim,thus probably the victim fell face-down,   which may also add to clue for the investigation.

Explanation:

the most speciallized is b. grizzly bear

one would be wind another would be water density