Answer:
Photosynthesis.
Step-by-step explanation:
In photosynthesis; 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
Here: CO₂ is carbonioxide, H₂O is water ==> Reactants
C₆H₁₂O₆ is simple sugar, O₂ is Oxygen ==> Products
Plants use their chlorophyll to trap Light energy that they use in breaking down the combination of "water" and "carbon dioxide".
The result of this process is "Simple Sugar" and Oxygen is emitted as the by-product.