Carbon cycle feedback happen when these changes act on the initial change by amplifying it or slowing it down.
Positive feedback This enhances changes, it move a system away from its equilibrium and make it unstable. Negative Feedback This dampens or buffers changes, this holds a system in some equilibrium and make it more stable.
Multiple feedback loops can occur in one environment. In the Arctic the climate is warming twice as fast as anywhere else in the world.