Answer:
Water, Solar energy, and Carbon Dioxide.
Explanation:
The overalll reaction of photosynthesis is 6CO2 + 6 H2O -> C6H12O6 (Glucose) + 6O2. This reaction is driven by energy in the form of electromagnetic radiation (light).
As we can see we need CO2, H2O, and light as reactants. And oxygen + glucose (carbohydrates) are our products.
