How do dung beetles help a carbon atom in animal dung to become part of a carbohydrate molecule within a plant?

Dung beetles lives in the animal dung and take nutrients from the undigested substances present in the dung. This dung is mixed with the soil by the beetle to increase the fertility of the soil. These nutrients is taken by plants with water through roots and makes their food in the form of carbohydrate from it in the process of photosynthesis. This carbohydrate is stored in different parts of plant body.

The female dung beetle buries and pushes the animal dung all the way to an enlarged chamber at the far end, they cause the breakdown of the dung to produce nutrients and compounds like the carbon atom which are infused in the soil and thus aids plant growth and adds carbohydrates molecule in the plant.

the answer is trees if i'm not mistaken