I'm showing that there are 3 different atoms in this plant. The 3 atoms names are Carbon, and Oxygen. The plant takes in Co2 and releases O2.
I'm showing that every time we eat we are taking in carbon. Why are we taking in carbon because, when the rabbit ate grass, it took in carbon, and when the wolf ate the rabbit it took its carbon molecules from its body, and when the human ate the wolf it took in all the carbon molecules from each animal. (Eating)
I'm showing the process of decomposition. the decomposers provide food for themselves by extracting chemicals from the dead bodies or organic wastes, using these to produce energy.
Combustion is a process of burning something. Any time something burns a combustion reaction. Combustion reactions are almost always exothermic.