Answer:
1 carbon dioxide
2 water
3 glucose
4 oxygen gas
Step-by-step explanation:
The problem here is to complete the photosynthesis reaction.
During photosynthesis, green plants manufacture their food in the presence of sunlight.
They take inorganic materials from the environment which are the carbon dioxide and water and using sunlight, they produce glucose and oxygen gas.
The reaction expression is given below:
Carbon dioxide + water → Glucose + Oxygen
So;
1 carbon dioxide
2 water
3 glucose
4 oxygen gas