Chemistry questions regarding the field of photography.?

Question

What chemical processes does the field of photography rely upon?

What is the chemical equation of the process ? (and how would you pronounce it)

whats the class of reaction it would be categorized in?

What role does each reaction play in the field of photography?

How are the products of the reaction used in photography?

How does these(this) reaction(s) benefit society as a whole?

Is there any harm to the environment from this(these) chemical processes?

Answer 1

These do sound like homework questions  :(