Answer:
The model has carbon in lithosphere, hydrosphere, biosphere, and atmosphere in different forms.
Explanation:
In the model, carbon is present in the atmosphere in the form of carbondioxide gas. This carbon is absorbed by the plants in the process of photosynthesis in order to produce food for itself and other organisms while on the other hand, plants, animals and humans give this carbondioxide to the atmosphere through the process of respiration. Carbon is present in earth spheres such as lithosphere, hydrosphere, biosphere, and atmosphere. Carbon is present in the land in the form of coal, oil, and natural gas, oil shale, and limestone. It is also present in water in dissolve form. It is present in the body of plants and animals in the form of proteins, fats and carbohydrates. It is present in the atmosphere in the form of carbondioxide gas.
