Answer: forensic science technician
Explanation:
An individual who investigate crimes through collection and analysis of the available physical evidence is a forensic technician.
The physical evidences are usually remains of humans or animals parts. Which can also be exhumed for laboratory analysis.
They make use of materials like chemicals, microscopes for evidence analysis, and evaluate findings with computer database of finger printings and DNA, for comparison with with the evidences collected from the scene.
Detail reports of the finding are complied for lawyers and detectives for possible witness in the Court of law.