Carbon Dioxide from the air is used to make sugars during the Photosynthesis.
The Photosynthesis is a process in which green plants uses the sunlight to create dioxygen and their food.
The formula of the dioxygen is: 6HO2 + 6CO2 --> C6H12O6 + 6O2
We can clearly see the formation of Glucose, a kind of sugar, from his presence in the product part: C6H12O6
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