photosynthesis is a kind of chemical reaction
photosynthesis is not chemical_process. photosynthesis is synthesis. photosynthesis is process. photochemical_reaction is chemical_reaction. photosynthesis is chemical_process. photosynthesis is photo_chemical_process. photosynthesis is not photo_chemical_process. photosynthesis_in_plants is endergonic_reaction. photosynthesis_in_sulfur_bacteria is chemical_reaction. photosynthesis_in_plants is not endergonic_reaction.