The cold will have helped to preserve evidence.

The court found that the defendant had a duty to preserve evidence since it should have known that it would be relevant for future litigation.

His body was protected by people on the street to prevent authorities from seizing it and to preserve evidence.

Discovery also allows the parties to formulate and narrow the issues for trial and obtain and preserve evidence.

This includes the photographing of fingerprints and questioned documents in order to preserve evidence of value in the process of crime investigation or presentation before the courts.