Sources Of Greenhouse Gases

Yes, the ratio of carbon 13 to carbon 12 is decreasing, which indicates that carbon dioxide is mainly a source of plant based (deforestation and fossil fuels.)

There are also several other ways to know that carbon is anthropogenic. See all 15 myth
http://www.ecohuddle.com/wiki/global-war ...

It is rarely used in the use of carbon 12 and carbon 13 in trying to find out whether the CO2 is anthropogenic. I believe nothing I read in a site like ecohuddle propaganda. They are very selective in what they consider relevant. It is simply ignorant to say that the carbon 12 and 13 should be published in the same amount by the ocean. Carbon 13 tend to remain in solution longer because it is heavier. This is how they use oxygen isotopes in ice as indicators of temperature. Most other points raised seemed correct, but it is the source material becomes suspect because they accept everything that agrees with them and reject things that do not. I know a PhD used the analysis of carbon 14 in an attempt to determine the anthropogenic sources. I have doubts about the accuracy because of the introduction of additional C14 nuclear weapons, the variations in cosmic rays and other things that must be taken into consideration. The alarmists are anything but unbiased if what ever is said to be highly suspect. Another example is that the pH of the ocean changes. The pH has not really changed compared to historical levels over what appears to be an increase in very low acidity, but it is even lower or higher pH than it was there thousand years. Alarmists would have you believe that the pH of the oceans is constant and the acidity is caused by CO2 and if you see the historical graph, you will understand this is typical of wishful thinking and using all the data supports their propaganda when they make such a request.

I would say that bravozulu going to have the same view of what not to ecohuddle (no surprise)
http://www.newscientist.com/article/dn11 ...

The song is usual that money is no science to support the theory, presenting them with a fact and your fingers in your ears for a few days and then pretending not answered their question.

The fact is Scripps, a world leader in CO2 research report showed the increase of c-12. The C-14 can also be used as a check for the period 1850 to early 1950 from nuclear testing is not comparable to later dates. This clearly proves that rising CO2 in the atmosphere comes from our use of fossil fuels.
As to the comment Bravo about the acidity of the oceans, it provides no help for his comments to paraphrase, are wishful thinking.
http://www2.cnrs.fr/en/377.htm?debut=48
http://www.research.noaa.gov/spotlite/ar ...
http://www.ucar.edu/news/releases/2006/a ...
http://royalsociety.org/displaypagedoc.a ...
http://www.precaution.org/lib/06/ocean_a ...
http://www.sciencedaily.com/releases/200 ...

~ Texas to_the-Max:
"Who started in 2008 and lasted until 2030. &.