Identify the two reactants for photosynthesis

Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.

Explanation:

and after water is usually warmed by the sun the water temperature raises and then evaporates .

the answer would be..

b. sucking