Figure 2.1. Diagram illustrating how RF is linked to other aspects of climate change assessed by the IPCC. Human activities and natural processes cause direct and indirect changes in climate change drivers. In general, these changes result in specific RF changes, either positive or negative, and cause some non-initial radiative effects, such as changes in evaporation. Radiative forcing and non-initial radiative effects lead to climate perturbations and responses as discussed in Chapters 6 , 7 and 8 . Attribution of climate change to natural and anthropogenic factors is discussed in Chapter 9 . The coupling among biogeochemical processes leads to feedbacks from climate change to its drivers ( Chapter 7 ). An example of this is the change in wetland emissions of CH_4 that may occur in a warmer climate. The potential approaches to mitigating climate change by altering human activities (dashed lines) are topics addressed by IPCC’s Working Group III.