What is a common method used to collect soil samples at a crime scene?

Collecting soil samples at a crime scene is an essential part of forensic investigations, as soil can provide valuable evidence linking a suspect or victim to a specific location. The chosen method, which involves using a sterile container to gather samples from multiple locations, is effective for several reasons.

This approach ensures that the soil samples are uncontaminated, preserving the integrity of the evidence. By using a sterile container, the risk of introducing foreign materials that could compromise the analysis is minimized. Collecting samples from multiple locations allows for a more comprehensive evaluation of the scene, as soil composition can vary significantly from one spot to another. This variation can enhance the investigative process by providing a broader context and potentially identifying a suspect's movements or interactions.

The other options highlight methods that have limitations. Using a plastic bag may not adequately prevent contamination, and it may not be suitable for long-term storage or preservation. Collecting large quantities of soil with a shovel could lead to mixing different samples or disrupting the scene unnecessarily. Lastly, while glass jars are typically good for preserving samples, they can break easily, posing a risk during transport and storage, and may not always be practical for soil collection.

Overall, the method of using a sterile container to gather samples from multiple locations maximizes