Photosynthesis separate carbon-dioxide in the atmosphere in to oxygen and carbon, using the sunlight. Thus Photo synthesis absorbs of heat or light energy that is contained in sunlight. In this way the inputs to the photosynthesis process are carbon-dioxide and light energy, and the outputs are Oxygen and carbon. Oxygen is released in the atmosphere while the carbon is used up in making food for the plants.
The amount of oxygen and carbon atoms released by photosynthesis are exactly equal to the atoms of these material contained in carbon-dioxide converted. In this way photosynthesis has conserved the mass or material, and in this way followed the law of conservation of mass.
Photo synthesis also follows the law of conservation of energy. The energy of sunlight used in the process of photosynthesis is absorbed by the molecules of carbon-dioxide before they can separate in carbon and oxygen molecules. This absorbed energy is present in the carbon and oxygen molecules and can be releases again as energy of combustion produced when carbon and oxygen combine to produce carbon dioxide.
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