What percentage of carbon dioxide emissions is due to the use of fossil fuels?
roughly 11% of CO2 in the atmosphere is contributable to humans'
use of fossil fuel. The largest contributor to atmospheric CO2 is
biomass degradation from rotting vegetation in rain forests and
jungles. CO2 in the atmosphere amounts to only a fraction of 0.1%
of the atmosphere, which is primarily Nitrogen (~79%) and Oxygen