The study looked at how adding food and garden waste to soil affects carbon levels and decomposition. They tested different mixtures of waste in a lab experiment for 60 days. Results showed that adding waste increased carbon decomposition and sped up the process. There were two stages of decomposition, with a change happening around 10 days. Adding more waste increased soil carbon levels. Food and garden waste had similar effects on soil carbon, but the amount of waste added made a difference. The more waste added, the more carbon was stored in the soil.