We have a science fair and my friend and I are making an experiment that produces carbon dioxide that is the reaction between mentors and diet coke. So we thought it would be more interesting if we make use of the carbon dioxide that is produced so I was browsing the web to see how can I use it but I wasn't successful. So I really need help. If anyone has any idea how to use the carbon dioxide please share.

Carbon dioxide is an needed by plants for photosynthesis. If you place plants in an enclosure with a higher-than-normal concentration of CO2 they will grow faster.