Which mistake did the student make in the diagram?

Carbon dioxide is not removed from the atmosphere during photosynthesis.
Plants do not remove carbon dioxide from the atmosphere during respiration.
Animals do not release carbon dioxide into the atmosphere during respiration.
Factory and vehicle emissions do not release carbon dioxide into the atmosphere.

The mistake that the student made in the diagram is "Factory and vehicle emissions do not release carbon dioxide into the atmosphere." This statement is incorrect as factory and vehicle emissions (such as burning fossil fuels) are a major source of carbon dioxide released into the atmosphere.