How does carbon cycle between the atmosphere and the biosphere? environmental science own words pls

A lot of carbon passes through the atmosphere and into the biosphere through the plants consuming it, or in other words, photosynthesis, and the plants waste is oxygen, which animals breathe and turn into carbon dioxide

TL;DR Plants enter carbon into the biosphere and animals release it into the atmosphere

i'd say that the moon rock is about 2.2 billion years old.