Border Patrol ­Practice Exam 2: Logical Reasoning — Flashcards

Law enforcement agencies use scientific techniques to identify suspects or to establish guilt. One obvious application of such techniques is the examination of a crime scene. Some substances found at a crime scene yield valuable clues under microscopic examination. Clothing fibers, dirt particles, and even pollen grains may reveal important information to the careful investigator. Nothing can be overlooked, because all substances found at a crime scene are potential sources of ­evidence.