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).
U.S. government scientists working at an observatory on the big island of Hawaii reported today that the concentration of carbon dioxide in the atmosphere is higher than at any time over the last several million years.ost scientists believe the burning of coal, oil, and natural gas is helping cause the rapid rise in carbon dioxide levels.