SimilarityRank
aerosols 0.815 54502
gases 0.797 11662
dioxide 0.796 10273
pollutants 0.786 16074
pollutant 0.775 41997
contaminant 0.774 45441
particulates 0.771 55487
troposphere 0.767 92087
chlorine 0.764 17545
ionization 0.764 60226
gasses 0.762 45276
ionizing 0.757 62668
CO2 0.755 9992
aerosol 0.755 34492
sulfur 0.754 22001
nitrogen 0.751 12237
particulate 0.750 32316
radioactivity 0.749 42842
gaseous 0.747 42339
methane 0.747 19799
dioxin 0.746 57731
NOx 0.746 55787
radon 0.745 32433
dioxins 0.743 77636
SO2 0.743 90224