Why are carbon dioxide and water used in the process of photosynthesis, and what is the source

Why are carbon dioxide and water used in the process of photosynthesis, and what is the source of a by-product of photo synthesis, i.e. oxygen.

because glucose is made up of the same elements that CO2 and water are needed to generate energy. A byproduct of photosynthesis is oxygen, which is formed during photolysis in the light phase during the decomposition of water.



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