Band 7+: A cycle diagram is a variation on the process diagram in which the process repeats itself. So it's a good idea to make that point in your answer. The diagram below illustrates the carbon cycle in nature. Write a 150-word description of this diagram for a university lecturer.

The picture illustrates how the natural carbon cycle operates. This process involves the sun, trees, animals, and human activities and functions in a continuous loop. The details are as follows.

First, plants undergo a chemical reaction with sunlight and carbon dioxide (CO2) known as photosynthesis. This process results in the production of organic carbon. Additionally, organic carbon is released not only from plants but also through the decay of organic matter, dead animals, and waste. Over time, these materials can transform into fossil fuels, which serve as essential raw materials for humans.

Second, both animals and plants respire, releasing CO2 into the atmosphere. In addition to respiration from plants and animals, human industrial activities also contribute to CO2 emissions, which are released from factories and vehicles. This results in significant amounts of CO2 entering the atmosphere. Subsequently, CO2, sunlight, and plants continue the cycle of photosynthesis. Thus, this system operates in a continual and natural manner.