Ecology includes the study of interactions organisms have with each other, other organisms, and with abiotic components of their environment.
// Profotos says that Documentary Photography is taking photographs to provide a record of social and political situations with the aim of conveying information. //The photography grad student Jenny Ackerman at Ohio University has her own definition of this style of photography.
Commercial photography is probably best defined as any photography for which the photographer is paid for images rather than works of art. In this light, money could be paid for the subject of the photograph or the photograph itself.