Carbon dioxide concentrations are increasing in the atmosphere. Explain how this can lead to either a positive feedback loop (whereby carbon dioxide concentrations continue to increase) or a negative feedback loop (whereby carbon concentrations begin to decrease). Be specific in describing the steps of the feedback loop, and be sure to indicate whether it is a positive or negative loop.

Carbon dioxide concentrations are increasing in the atmosphere. Explain how this can lead to either a positive feedback loop (whereby carbon dioxide concentrations continue to increase) or a negative feedback loop (whereby carbon concentrations begin to decrease). Be specific in describing the steps of the feedback loop, and be sure to indicate whether it is a positive or negative loop.