[15 pts] The world’s forests influence the Earth’s climate through complex physical, chemical, and biological processes. Changes in forest area may disrupt such processes and lead to different feedback that can enhance or attenuate climate change. The figure shows an example of a feedback loop. 

In this context, answer the questions:

a. Describe the main biogeophysical process influenced by boreal forests using the feedback loop diagram. Focus on one process and remember to identify the feedback type.

b. Describe the main biogeophysical process influenced by tropical forests using the feedback loop diagram. Focus on one process and remember to identify the feedback type.