To revise the model, William wants to use color to identify the reactants of photosynthesis. Which labels should he color? H2O and O2 H 2 O and O 2 O2 and CO2 O 2 and CO 2 H2O and CO2 H 2 O and CO 2 H2O, O2, and CO2

The label to be colored is the highlighted in bold image.

H2O and O2 H 2 O and O 2 O2 and CO2 O 2 and CO 2 H2O and CO2 H 2 O and CO 2 H2O, O2, and CO2

Explanation:

The chemical reaction of photosynthesis is

6 CO2 + 6H2O --> C6H12O6 +  6 O2 + energy.

Hence the reactant of photosynthesis are

H2O and CO2

The label to be colored is the highlighted in bold image.

H2O and O2 H 2 O and O 2 O2 and CO2 O 2 and CO 2 H2O and CO2 H 2 O and CO 2 H2O, O2, and CO2

nucleus

would be most reasonable answer tbh