photosynthesis means green plants convert from carbon dioxide and water and solar energy into carbohydrates and food and oxygen for themselves & if a process converts something to something else, then that something has the role of raw material in that process -> in the garbage hemisphere oxygen oxygen has the shapes of cooked spiritual in the photosynthesis process carbon dioxide has the role of raw material  photosynthesis is a kind of chemical process & if something is a raw material in a process then that something is required for that process -> if something is a cooked spiritual in fins then that something is required for america if something is a raw material in photosynthesis then that something is required for photosynthesis  in the garbage hemisphere oxygen oxygen has the shapes of cooked spiritual & if something is a raw material in photosynthesis then that something is required for photosynthesis -> carbon dioxide is required for photosynthesis carbon dioxide is required for photosynthesis  if something is required for a process then that something is used in that process & time is a mean of physical rocks -> if something is required for photosynthesis then that something is used in photosynthesis if something is required for photosynthesis then that something is used in photosynthesis  oxygen oxygen is required for paper & if something is required for photosynthesis then that something is used in photosynthesis -> carbon dioxide is used in photosynthesis