Answer:
light energy, above the arrow
Step-by-step explanation:
The photosynthesis equation is represented as follows:
6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O
This is because, for plants to get all the molecules necessary for their organism, through photosynthesis, they need to capture from the environment six molecules of CO2 and 12 molecules of water, which, at the end of photosynthesis, are transformed into glucose, oxygen and Water. However, these transformations are carried out because of the capture of light energy, for this reason, it is necessary that this energy be added to the equation. The correct thing is to put light energy above the arrow.