In the atmosphere there is carbon gas. This gas is removed from the atmosphere by a process called photosynthesis that plants complete to make energy.
Carbon is also moved throughout the food web since herbivores eat plants, carnivores eat those herbivores and so on up the chain. Animals also release carbon during respiration when they exhale
Carbon moves into the soil through the process of animals dying and excreting droppings and when exposed to extremely high pressures underground, they can slowly turn into fossil fuels.
Bodies of water such as the oceans are known as carbon sink since they soak up carbon from the atmosphere.
Humans use fossil fuels at power plants, to heat homes, and run vehicles. Most of this carbon goes back into the atmosphere.
However, with 7.53 billion people here on Earth, factories are producing too much carbon dioxide causing the greenhouse effect and global warming.