Question

human influences on cycles
carbon cycle
what process naturally moves carbon through ecosystems
and helps maintain equilibrium in the carbon cycle?
photosynthesis
pollution
mining
deforestation

Explanation:

The text explicitly states that "Photosynthesis naturally moves carbon through...maintaining a delicate equilibrium". Pollution, mining, and deforestation are human - caused disruptions rather than natural processes for carbon movement in ecosystems.

Answer:

photosynthesis