Carbon dioxide gas is found in small proportions in the atmosphere. Some of the important uses of carbon dioxide are listed below.
1) It is used by plants in the process of photosynthesis for preparation of their own food in presence of the sunlight.
2) It is also used in fire extinguishers as the gas is non-combustible.
3) It is also used in the production of carbonated drinks by dissolving carbon dioxide gas in water.