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Organisms that can capture energy from sunlight or chemicals and use that energy to produce food are called autotrophs, or primary producers. The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis.rganisms that can capture energy from sunlight or chemicals and use that energy to produce food are called autotrophs, or primary producers. The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis.
Chemical energy is stored inside a substance or object until it is involved in a chemical reaction. Our bodies use chemical energy to perform daily functions. During an exothermic chemical reaction, chemical energy in the form of heat is released.Plants perform a chemical reaction each time they use sunlight to make their own food during photosynthesis.ur bodies use chemical energy to perform daily functions. During an exothermic chemical reaction, chemical energy in the form of heat is released. Plants perform a chemical reaction each time they use sunlight to make their own food during photosynthesis.