Photography first used at a crime scene. before the 1800s during the 1800s 1900-1988 1990-present

during the 1800s

Explanation:

Alphonse Bertillon (a French police officer) was the first to methodically photograph and document crime scenes. He is also the inventor of the mug shot.

Photographs at crime scenes and criminals started at mid-1800s and they were standardized at the end of that century when they came to be widely accepted as a forensic means of identification.

where's the diagram?

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.