Health claims describe a relationship between a food substance (a food, food component, or dietary supplement ingredient), and reduced risk of a disease or health-related condition.ealth claims describe a relationship between a food substance (a food, food component, or dietary supplement ingredient), and reduced risk of a disease or health-related condition.
Burning carbon requires oxygen (O2), and when we burn an atom of carbon, the required oxygen becomes part of the CO2 molecule. So if the CO2 increase is caused by burning carbon (fossil fuels), we would expect atmospheric O2 levels to decrease at the same rate. And that's indeed what we observe (Figure 1).
It is caused by humans burning fossil fuel (coal, oil and natural gas) and cutting down forests. Both of these mean more carbon dioxide in the greenhouse gases in the atmosphe â¦ re. The extra carbon dioxide is causing global warming, which is causing climate change.his is caused by an increase in atmospheric carbon dioxide levels, resulting principally from our use of fossil fuels such as coal, oil and natural gas, and from the manufacture of cement and deforestation.