Make a claim about how there got to be so much matter and energy in the peat/permafrost system. You need to have 2 pieces of evidence.

Peat formed in the Artic approximately
It is estimated that there are
11,000 years ago when peat was formed, the Artic was
What is one factor that contributed to a warmer Arctic?
What mechanism explains how plants capture and store energy?
How does photosynthesis work?
What factors could contribute to the quality of carbon stored in the peat/permafrost system?
How has the temperature and amount of sunlight changed over time?
What does this have to do with the peat/permafrost system today?