The correct answer is B. Carbon dioxide.
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar. The chemical equation for photosynthesis is:
6CO2 + 6H2O + light energy â C6H12O6 + 6O2
As you can see, carbon dioxide is one of the reactants in photosynthesis, and oxygen is one of the products.
Carbonates from soil are not
used in photosynthesis. They are formed when carbon dioxide dissolves in water and reacts with minerals in the soil.Water is also not used in photosynthesis. It is a reactant in the Calvin cycle, which is a series of reactions that occur after the light-dependent reactions of photosynthesis.
Oxides of mineral elements are not used in photosynthesis. They are formed when oxygen reacts with metals or non-metals.
Therefore, the correct answer is B. Carbon dioxide.