Related by context. Frequent words. (Click for all words.) 55 hyphae 53 biting midges 53 fruiting bodies 53 phloem 52 decaying vegetation 52 moth larvae 52 Aphid 52 Methylmercury 52 larvae hatch 52 fungal spores 51 oocysts 51 decomposers 51 Scientists theorize 51 Thrips 50 protozoan 50 stolons 50 frass 50 respire 50 tannic acid 50 pinhead sized 49 leafhoppers 49 isotope ratios 49 Spider mites 49 birch pollen 49 Penicillium 49 holly berries 49 pine pollen 49 woody shrubs 49 bacterial fermentation 49 pollen grains 49 sweet clover 48 rosehips 48 insect eaters 48 pine resin 48 flea beetle 48 tunicate 48 Spores 48 Dust mites 48 naturally occuring 48 B. subtilis 48 photoperiod 48 oxidise 48 frogs salamanders 48 cat dander 48 Pythium 48 solutes 48 luteolin 48 bacterial spores 48 sooty mold 48 Escherichia coli bacteria 48 alkaline soils 47 pigment melanin 47 milky sap 47 neural crest cells 47 vacuole 47 rust spores 47 moistens 47 biodegraded 47 trehalose 47 protozoan parasite 47 airborne spores 47 seedheads 47 Uric acid 47 insectivores 47 mutagens 47 Rickettsia 47 acrolein 47 pollen 46 poison sumac 46 mycorrhizal fungi 46 spider mite 46 UV irradiation 46 Ultraviolet light 46 fungal pathogen 46 mutant flies 46 seedpods 46 Saharan dust 46 atmospheric pollutants 46 winter dormancy 46 sessile 46 nanobubbles 46 leguminous 46 goldenrods 46 lichen 46 subsp 46 Genetic mutations 46 C. botulinum 46 coniferous forests 46 fruitflies 46 tent caterpillars 46 leaf beetles 46 dentine 46 mycelium 46 broad leaved 45 nitrogen fertilization 45 chytrid 45 tuberous 45 vacuoles 45 americanus 45 larval stages 45 mullein