Answer:
It remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere
Explanation:
Carbon cycles through the Earth's spheres. Since the Earth is made up of the atmosphere, hydrosphere, geosphere, and biosphere, carbon can move within or between any two spheres in a cycle. It is transferred but remains in Earth's spheres, so the total amount of carbon remains constant regardless of the changes it goes through. These spheres are the atmosphere, hydrosphere, geosphere, and biosphere. Carbon can be transferred from one of these spheres to another, but the total amount of carbon remains constant because no carbon is gained or lost as it changes location throughout the system. Therefore, it remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere.
