Name 6 Natural Sources of Air Pollutants and 2 for CO2
a) Industrial emissions, volcanic eruptions, pollen, forest fires, automobile exhaust, methane from livestock
b) Ozone layer depletion, deforestation, oceanic emissions, nitrogen oxide from fertilizers
c) Indoor cooking, radon gas, oceanic emissions, deforestation, pollen, industrial emissions
d) Methane from livestock, radon gas, automobile exhaust, forest fires, nitrogen oxide from fertilizers, volcanic eruptions