Navah writes out the chemical equation for photosynthesis. She includes two reacting molecules to the left of the arrow and two resulting molecules to the right. What must be added to the chemical equation to more accurately represent photosynthesis?

Photosynthesis uses carbon dioxide and water to make glucose and oxygen, but the reaction also needs energy from sunlight. That light energy is typically written above the arrow to show it drives the reaction, so the correct choice is light energy, above the arrow.

AI-written and checked against the verified answer.