Carbon Dioxide (CO2). CO2 is a naturally occurring gas, and is also a by-product of burning fossil fuels and biomass, as well as caused by land use changes and industrial processed. It is the principal human-caused greenhouse gas.
Carbon Dioxide (CO2). CO2 is a naturally occurring gas, and is also a by-product of burning fossil fuels and biomass, as well as caused by land use changes and industrial processed. It is the principal human-caused greenhouse gas.