SimilarityRank
aquifer 0.830 17613
nitrate 0.797 7756
acidification 0.776 21870
pollutant 0.760 10281
watercourse 0.747 22216
hydrocarbon 0.747 12320
ground-water 0.746 71264
radon 0.741 18238
contaminant 0.739 23773
tapwater 0.732 27084
silting 0.729 58043
contamination 0.729 7877
sediment 0.727 5603
eutrophication 0.727 42648
dioxin 0.726 17452
pollution 0.725 2289
waterlogging 0.725 41903
radionuclide 0.725 25560
polluted 0.718 13076
landfill 0.718 13169
seawater 0.713 33822
precipitation 0.713 14805
leachate 0.713 84487
humic 0.712 50893
siltation 0.710 76239