PPT Slide
Notes:
As I said before, the sheer complexity of the global system makes all these predictions open to argument. This diagram shows some of the processes any prediction model must take into account, but the huge number of interactions and unknowns means we are only ever making an educated guess.
In the late 80's with the evidence for an increase in GHG's and global warming building, and great uncertainty about how damaging these changes may be, politicians began to act...