SimilarityRank
sulfur_dioxide 0.852 93673
NOx 0.841 71494
air_pollutant 0.830 77087
particulate_matter 0.802 54856
carbon_monoxide 0.758 39006
pollutant 0.758 14162
emission 0.743 4559
carbon_dioxide 0.731 11994
greenhouse_gas 0.725 18514
particulate 0.725 43599
air_pollution 0.722 13199
emission_from 0.709 32492
ozone 0.708 18722
carbon_dioxide_emission 0.692 61386
methane 0.692 14641
ammonia 0.689 28243
Co_2_emission 0.687 88444
soot 0.679 42732
CO2 0.673 9699
combustion_of 0.672 77006
Co_2 0.668 19859
pollution_from 0.664 77604
benzene 0.663 50027
sulfur 0.662 33667
smog 0.661 39059