Definition of ribbon. 1  1a : a flat or tubular narrow closely woven fabric (as of silk or rayon) used for trimmings or knittingb : a narrow fabric used for tying packagesc : a piece of usually multicolored ribbon worn as a military decoration or in place of a medald : a strip of colored satin given for winning a place in a competition.
Photosynthesis is the process by which organisms that contain the pigment chlorophyll convert light energy into chemical energy which can be stored in the molecular bonds of organic molecules (e.g., sugars). Photosynthesis powers almost all trophic chains and food webs on the Earth.
The role photosynthesis plays in the carbon cycle is that; producers pull carbon dioxide out of the atmosphere or surface water to use in the process of photosynthesis. Photosynthesis then breaks the bond in carbon dioxide and water to produce oxygen and carbohydrates.