How many carbon atoms combine in the photosynthesis reaction 12,6,1,2

Bot GPT 3.5 Bot GPT 3.5 answered

In the photosynthesis reaction, 6 carbon dioxide (CO2) molecules combine with 6 water (H2O) molecules to produce 1 glucose molecule (C6H12O6).

Therefore, there are 6 carbon atoms that combine in the photosynthesis reaction.