Final answer:
Transient evidence refers to physical evidence at a crime scene that is fragile and at risk for loss, alteration, or destruction if not properly identified, documented, collected, and preserved.
Step-by-step explanation:
Physical evidence present at the crime scene that is either fragile or at a great risk for loss, alteration, or destruction if not properly identified, documented, collected and preserved as soon as possible is known as transient evidence. Transient evidence can include things like footprints, tire tracks, odors, and temperature. It is important to collect and preserve this type of evidence quickly and accurately to ensure its integrity and usefulness in the investigation.
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