Question: In one of the steps of the carbon cycle, a person exhales a molecule of carbon dioxide (CO2) into the atmosphere. Which of the following is most likely to happen next to the atom of carbon in this molecule?
Options:
It may be used as part of a sugar in a plant.
It may become part of a protein in an animal.
It may be consumed as a fossil fuel is burned.
It may be decomposed into carbon and oxygen by a bacterium.
Answer: It may be used as part of a sugar in a plant.