Answer:
a gas used during photosynthesi
Step-by-step explanation:
The chemical equation of photosynthesis is 6CO2 + 6H2O=C6H12O6 + 6O2
O there is oxygen and it is a gas. This is because during photosynthesis, carbondioxide react with water in the presence of light energy and chlorophyll to produce glucose and oxygen. The oxygen produced is a gas and it is use during respiration of animals.