SimilarityRank
carbon_dioxide 0.710 11994
Co_2 0.659 19859
CO2 0.652 9699
methane 0.652 14641
nitrogen 0.637 11773
carbon_monoxide 0.628 39006
ammonia 0.624 28243
greenhouse_gas 0.619 18514
nitrogen_oxide 0.618 78932
combustion_of 0.598 77006
sulfur_dioxide 0.593 93673
nitric_oxide 0.582 68359
ozone 0.576 18722
NOx 0.574 71494
combustion 0.560 26558
water_vapour 0.559 85308
anesthetic 0.557 62398
nitrate 0.554 26529
morphine 0.553 40163
oxygen 0.551 6930
particulate 0.546 43599
GHG 0.546 70082
O_2 0.545 92339
sedation 0.545 56183
emission 0.544 4559