Question

what happens to carbon in the carbon cycle?
it is only stored in the atmosphere
it is eliminated from the ecosystem
it is permanently trapped in fossil fuels
it moves between the atmosphere, oceans, and living organisms

Explanation:

To determine the correct answer, we analyze the carbon cycle:

• The first option is incorrect because carbon is stored in multiple reservoirs (not just the atmosphere), like oceans, organisms, and fossil fuels.
• The second option is wrong as carbon is not eliminated from the ecosystem; it cycles through it.
• The third option is incorrect because fossil fuels can be burned, releasing carbon back into the atmosphere, so carbon isn't permanently trapped there.
• The fourth option is correct: In the carbon cycle, carbon moves between the atmosphere (as \( \text{CO}_2 \)), oceans (dissolved \( \text{CO}_2 \) or carbonate compounds), and living organisms (through photosynthesis, respiration, decomposition, etc.).

Answer:

D. It moves between the atmosphere, oceans, and living organisms