While criminals have used many means and tried many chemicals to destroy evidence, today, scientists can easily locate enough forensic evidence at most crime scenes. Fire (arson) and bleach have been two commonly used measures, but science can identify inflammatory agents and bleach does not remove all blood evidence. It only takes one tiny blood cell to track DNA.
The BEST way to completely eliminate forensic evidence is to never commit the crime!
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The word that is commonly used to describe the act of destroying evidence is "tampering." Tampering with evidence can hinder investigations and obstruct justice.
A forensic scientist is typically involved in analyzing evidence in a laboratory setting and providing expert testimony, while a forensic science technician is usually responsible for collecting and processing evidence at crime scenes. Forensic scientists often have more specialized training and expertise in a particular scientific field, while forensic science technicians have more general knowledge of crime scene investigation techniques.
Forensic toxicology is used in criminal investigations to determine the presence of drugs, alcohol, or other toxic substances in the body. This information can help establish the cause of death, identify potential suspects, and provide evidence for legal proceedings.
Forensic labs use infrared spectrophotometers because they can analyze the chemical composition of evidence samples by measuring the absorption of infrared radiation. This allows forensic scientists to identify and compare substances such as drugs, fibers, and paints in criminal investigations.