Problem: Investigators face many challenges when working with the different types of physical evidence. Each type of evidence must be recognized, documented, collected, and preserved correctly or it could be lost or become useless during an investigation. According to Saferstein (2020), proper handling of evidence is one of the most important parts of forensic science because mistakes can affect the outcome of a case. Transient evidence can be one of the hardest types of evidence to deal with because it disappears quickly. Things like odors, smoke, temperature, or weather conditions can change within minutes. If investigators do not document this evidence immediately, it may be gone forever. This is why investigators must arrive at the scene as quickly as possible and carefully record their observations. Need Assignment Help?