??? ??? ??? Photosynthesis process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches ??? ??? ??? Autotrophs organisms that make their own food ??? ??? ??? Pigment dry coloring matter (especially an insoluble powder to be mixed with a liquid to produce paint etc) ??? ??? ??? Chlorophyll