Question

choose the correct answer.
in the process of photosynthesis, what is combined with carbon dioxide to produce glucose?
nitrogen
phosphorus
water

Explanation:

Photosynthesis is a process in which plants use light energy to convert carbon dioxide ($CO_2$) and water ($H_2O$) into glucose ($C_6H_{12}O_6$) and oxygen ($O_2$). The chemical equation for photosynthesis is $6CO_2 + 6H_2O \xrightarrow{light} C_6H_{12}O_6+6O_2$. Nitrogen and phosphorus are not reactants in the basic photosynthesis reaction for producing glucose. Nitrogen is more relevant in processes like nitrogen - fixation in some bacteria, and phosphorus is involved in energy - related molecules (e.g., ATP) but not as a reactant with $CO_2$ to form glucose in photosynthesis.

Answer:

water