Answer:
Step-by-step explanation:
Fingerprints are the impressions that are left over any surface. These consists of the characteristics of the friction ridge skin of the human finger. The oil, dirt, blood, other liquid stains can be responsible for the development of the impression over the surface.
The latent or hidden prints can be observed and discovered by utilizing the powder technique, using the chemical reagents and utilization of UV or alternating light sources.