Where the Carbon Comes From

I've talked a lot about Greenhouse Gasses today, and in earlier posts, as the likely cause of Global Warming.  However I've yet to post anything about where all the extra carbon is coming from other than mentioning "fossil fuels."
http://ceeb.uoregon.edu/Bridgham/pubpdfs/art_24.pdf

 This study by John Pastor, Jeremy Solin, Scott D. Bridgham, Karen Updegraff, Cal Harth, Peter Weishampel and Bradley Dewey, explains that "dissolved organic carbon" is released from peatlands, or areas where dissolving dead plant matter which may someday become oil.  According to my trusty Biology textbook, written by David Sadava and others, carbon is taken out of the atmosphere when plants intake CO2 and fix it into sugars, so they can make food for themselves.  (Life: The Science of Biology. Page 1214-1216)  When they break down this food, known as glucose, the Oxygen is released, but the carbon remains fixed within the plants.  When they die, they still contain the carbon.  overtime, huge areas of plant matter are covered up by sediment, baked in the earth, and this turns into oil.  I looked at the numbers, and these fossil fuels account for over 60% of all carbon, ON EARTH.  By burning it, we are releasing carbon in amazing amounts, and more burning means more CO2, which mean more reflective, hot, muggy, dangerous greenhouse gasses. Another thing I'd like to point out is that another 20-30% of the carbon is locked up in carbonate minerals and rocks, areas mined for other resources constantly.   
  At first I was surprised how quickly the earth was growing warmer.  Now I'm almost angry. Not only is it looking more and more like the sheer speed of this climate change happening is our fault entirely, but still there are thousands upon thousands of people who refuse to believe it's happening at all, naturally or otherwise.  While the article by Solin et Al. explains that the climate areas to be affected most by global warming will be arctic and subarctic areas, I am certain that the billions living in the temperate mid latitudes are going to miss their comfortable mild temperatures and centered climate.  Summers will get hotter, winters will get wet and muggy, and eventually people will end up moving north.  One of my earlier blogs mentioned that because of axil tilt, changes happen in climate regularly. However, a climate change happening in only centuries, not dozes of millenia, is certainly going to cause something drastic, and our kids will be around to live with it.