Final answer:
Carbon can be transferred between the atmosphere and other spheres, such as the biosphere, through processes like photosynthesis and cellular respiration.
Step-by-step explanation:
The movement of carbon through the land, water, and air is complex and occurs more slowly geologically than between living organisms. Carbon is stored for long periods in reservoirs such as the atmosphere, bodies of liquid water (mostly oceans), ocean sediment, soil, land sediments (including fossil fuels), and the Earth's interior.
Carbon can be transferred between the atmosphere and other spheres, such as the biosphere, through processes like photosynthesis and cellular respiration.
Photosynthesis by producers (like plants) removes carbon dioxide from the atmosphere and uses it to make organic carbon compounds. On the other hand, cellular respiration by living things releases carbon into the atmosphere as carbon dioxide.