Climate change anyone? Global Warming?

 Carbonic acid in air combines with rain water to form H2CO3.  H2CO3 erodes limestone, releasing carbon dioxide into the water + calcium hydroxide Ca(OH)2.  Shell fish in the ocean apparently convert CA(OH)2 into limestone, CA(CO)3 (shellfish combine carbon + oxygen with calcium to form limestone). Photosysthysis also balances carbon. Plants and shellfish remove carbon from the envoronment. 

When it comes to carbon being released by nature into the environment, volcanos relese carbon.  Plants and animals and all life forms release carbon when they "burn" cabohydrates.  Also, carbonic acid in rain water combines with limestone to release carbon from the limestone rock.  Limestone is very abundent world wide, and carbonic acid in rain water impacts much of it, releasing carbon.

Large amounts of plant and animal material, contining much carbon, are buried each year in the deltas of major rivers, on the bottom of the oceans, and in lakes. Organic matter buried in the ocean eventially becomes oil, tar, and natural gas. The carbon that comes out of you car and our power plants was once buried in the earth, much of it during the Carboniforus Era.  When we burn fuel, the carbon goes back into the air where it came from in the first place. In good time it will again be bound with calcium or buried in the ocean.

I have this question.  How much carbon is in the air and the water today compared to the amount of carbon that was in the air and water in the past?  No one has provided to me an answer to this question that I trust.  Until I have the answer to this question, the issue of global warming is for me, a theory, not a fact.  Yes, I know that glaciers have been melting in Alaska, and ships have made the North West Passage, but at the South Pole, the ice is still there.  I have sumarized here in what I understand about clamate change.  I am a biologist with 38 years of experience, and I question the statments of lesser qualified people that endorse the theory of "global warming." I also question the statement of the unlearned that discount the posiblity of man caused climate change.

I have read that debris and soot, resulitng from air polution, are responsible for the melting of glaciers.