Question

which of the following is an example of the carbon cycle?

plants using carbon dioxide to photosynthesis animals eating the plant, then people eating the animal then farting

animals breathing carbon dioxide in the atmosphere then eating plants.

carbon in plants moving to carbon in the air then people breathing the air.

rewatch

Explanation:

The carbon cycle involves the movement of carbon through the environment. Plants use carbon dioxide for photosynthesis (taking carbon from the atmosphere). Animals eat plants (transferring carbon from plants to animals). When people eat animals, carbon is further transferred. Farting (flatulence) can release some carbon - containing gases (like methane in some cases, which has carbon). This shows a cycle of carbon movement from the atmosphere (as \(CO_2\)) to plants, to animals, to humans and then back (in part) to the environment.
Animals do not breathe in carbon dioxide (they breathe in oxygen and breathe out carbon dioxide). The option “Carbon in plants moving to carbon in the air then people breathing the air” is too simplistic and does not show the full cycle as comprehensively as the first option.

Answer:

Plants using carbon dioxide to photosynthesis animals eating the plant, then people eating the animal then farting.