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From these clues, they can sometimes establish cause-of-death.

If a mass grave is discovered or in the event of large casualties, forensic archaeologists can identify the victims using facial reconstruction software.

Investigators will look at blood, fluid, or fingerprints, residue, hard drives, computers, or other technology to establish how a crime took place.

Crimes can vary from tax evasion to theft of company assets.One of the first cases in which computer forensics lead to a conviction involved the messages exchanged in an online chat room.Crime scene investigations document and gather any physical evidence found at a crime scene in order to solve a crime or determine whether a crime has taken place.Forensic biologists examine blood and other bodily fluids, hair, bones, insects and plant and animal remains to help identify victims and support criminal investigations.Using technology in the lab and in the field, forensic biologists collect and analyze biological evidence found on clothing, weapons and other surfaces to determine the time and cause of death.