The illustrated diagram is a clear presentation of how carbon moves on and around the Earth’s atmosphere. Overall, CO2 is created from 2 main causes are from both natural and man-made practices.
As is shown in the diagram, carbon-di-oxide or CO2 gas is one of the main sources of carbon in our environment and it is created due to two major exercises. The natural exercise includes both plants and animals. Using the sunlight plants produce food through photosynthesis reaction which creates CO2. Plants also release CO2 gas and carbon in the atmosphere and below the surface through respiration. Animal respiration also contributes by discharging carbon dioxide into the atmosphere which comes back to the surface with rainfall. Carbon is also discharged on the surface level and absorbed by water owing to the death of organisms and wastes as well as fossils and fossil fuels beneath the ground.
The other one is the man-made exercise which includes factory wastes and emissions and exhaust release which are responsible for a large amount of carbon-di-oxide discharge on the environment.