My main concern about global warming is the way it affects our ocean. It is causing coral bleaching in the upper levels of coral formations, killing the corals themselves because they are very delicate. It is affecting marine creatures' life cycles from the smallest lifeforms to the largest whales and their migrations. There is even reason to believe that it may be causing the increase of Giant Squid carcasses washing up on the beaches. Believe it or not, there are many marine creatures that are so used to a very precise set of environmental factors they cannot tolerate even a very small temperature increase, as it also directly affects water chemistry.
The Northern polar regions are seeing the effects of loss of ice floes and solid icy ground. There is less and less solid ice for large marine mammals to haul out on(walruses, seals, etc), and therefore less hunting ground for polar bears. They are all going to have to adapt somehow, but for the more specialized creatures there, the changes could prove too dramatic over time.
I believe global warming is cyclical, but I also believe that it is happening at a much faster rate than it has ever before, which we know is a fact, because of our effects on our environment. I will not put full blame on either factor, but it up to us to do something as soon as we possibly can. We cannot reverse the natural cycle of the climate, but if we can just slightly reduce our effects on the environment, it will help more than many people realize.
