Some cases cannot be solved without this evidence. “Physical evidence refers to anything from a non-living origin, such as fingerprints, tire marks, footprints, fibers, paint, and construction materials” (“PE”). There is also another group called biological evidence. Biological evidence comes from a living being, including bloodstains and DNA. Forensic scientists classify their evidence into categories including these. “Forensic science is the use of scientific principles and methods to analyze evidence related to a crime” (Funkhouser). When a crime is committed, law enforcement officers tape off the scene as quickly as possible (Funkhouser). They then search the area for evidence (Funkhouser). Forensic scientists rarely go to crime scenes (Funkhouser). Once all the evidence has been collected on site, it is then carefully transported to the crime lab for analysis (Funkhouser). Everything related to a crime scene is taken very seriously. It is a very tedious process that requires patience and