The solutions used in the manual processing method should be changed regularly so that they ??

Why do you think crime scene photographers take pictures of rooms where the crime did not occur?

Holas me podrian .. es una encuesta del ambito profesional para la licen de lenguaje xd

Above is a picture of one of the most famous discoveries ever to be found in china. answer the following questions: - what does the picture show? - when and where was it discover? - who discovered it and what was he doing when he/she discovered it?