if a process converts something into something else then that something has the role of raw material in that process & photosynthesis is a kind of process ->  if the photosynthesis process converts something into something else then that something has the role of raw material in the photosynthesis process  if the photosynthesis process converts something into something else then that something has the role of raw material in the photosynthesis process & photosynthesis is a source of / makes food / energy for the plant by converting carbon dioxide, water, and sunlight into carbohydrates ->  in the photosynthesis process carbon dioxide / water / sunlight has the role of raw material  in the photosynthesis process carbon dioxide / water / sunlight has the role of raw material & photosynthesis means producers / green plants convert from carbon dioxide and water and solar energy into carbohydrates and food and oxygen for themselves ->  photosynthesis means green plants convert solar energy and raw materials into food and oxygen  photosynthesis means green plants convert solar energy and raw materials into food and oxygen & green plants provide food for themselves / animals / consumers by performing photosynthesis ->  green plants convert solar energy and raw materials into food  green plants convert solar energy and raw materials into food & green plants are a kind of producer -> producers convert solar energy and raw materials into food