Question

how can say that photosynthesis is a chemical change?

Answer 1

photosynthesis is the process through which plant convert light energy into chemical energy share the chemical reaction involved as we can see water and carbon dioxide combined to form glucose and oxygen since new chemical species are formed photosynthesis is clearly a chemical change

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Answer 2

we can say that photosynthesis is chemical reaction.......because co2 is reduced in the photosynthesis reaction...