The primary method of distinguishing between Micrococcus and Staphylococcus is via the Cytochrome C or Oxidase test. Staphylococci are oxidase negative while Micrococci are oxidase positive.
The easiest way to differentiate them is by color. Both are pigment producing, and while M. luteus has yellow colonies, M. roseus has pink colonies. If you need a more scientifically valid way of...
Photosynthesis is the process used by plants to convert carbon dioxide and water to oxygen.
This oxygen is then used in the process of respiration to produce energy.