Sunlight, carbon dioxide, and water are the initial reactants in photosynthesis. When photosynthesis is finished, it releases oxygen and creates molecules of carbohydrates, most frequently glucose.
The chemical reaction that breaks down the water and carbon dioxide molecules and then puts them back together to generate glucose and oxygen gas is sparked by the sun's light energy.
Oxygen is created as a consequence of plants using water, carbon dioxide, and sunlight to produce sugar. A plant can use oxygen to burn the sugar it made when it had sunlight to generate energy when it does not have sunlight.
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