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.
However, human activities are now increasing the concentration of carbon dioxide in our atmosphere, amplifying the natural warming caused by the greenhouse effect. During the Industrial Revolution, humans began burning coal, natural gas, and oil to power machines for manufacturing and transportation.
The burning of fossil fuels releases the carbon dioxide removed from the atmosphere hundreds of millions of years ago. Other carbon dioxide sources include volcanoes and bush fires. A: The single largest factor for increasing atmospheric CO2 is the burning of fossil fuel. Human beings release 30 billion tons of CO2 into the atmosphere each year from fossil sources. Over the decades this has lead to an increase from 280 parts per million to now over 390 ppm of CO2.