a.) Describe 2 positive feedback systems and 2 negative feedback systems for global climate change.
b.) If all of the ice in the Arctic Ocean were to melt, how high would global sea-level rise? If all the ice in Greenland were to melt, how high would global sea-level rise? How likely is this in the next 10 years?
c.) Describe three (3) impacts that this rise in sea-level would have on the world's human populations.