Related by context. Frequent words. (Click for all words.) 64 anaerobic bacteria 57 microorganisms 56 rotting vegetation 56 plankton blooms 55 naturally occurring bacteria 55 algal 55 microbes 55 carbonic acid 55 micro organisms 54 algae 54 atmospheric nitrogen 54 purines 54 bacteria 54 potent greenhouse gas 54 mycorrhizal fungi 53 phytoplankton blooms 53 nutrient rich 53 fungi 53 fungal spores 53 microscopic algae 52 nitrification 52 micro organism 52 duckweed 52 mucilage 52 gastropods 52 hydroxyl radicals 52 alga 51 bacterial 51 soil salinity 51 absorbs carbon dioxide 51 nutrient uptake 51 methanogens 51 bacterial colonies 51 Microorganisms 51 nitrogen fixation 50 alkaline soils 50 oxygenating 50 Cyanobacteria 50 amphipods 50 acidify 50 Acidic 50 Reverse osmosis 50 fruiting bodies 50 pollinating insects 50 microbial 49 deplete oxygen 49 phloem 49 larval stages 49 anaerobic 49 potassium permanganate 49 rotifers 49 oxidizes 49 amoebae 49 inorganic compounds 49 Algae blooms 49 nutrients 49 fungal 49 zooxanthellae 49 seed germination 49 soils 49 upwellings 49 organic acids 49 clathrates 49 absorbing carbon dioxide 49 mycobacteria 49 microorganism 49 sooty mold 48 sorption 48 acidic soils 48 salination 48 Bacteria 48 oxidants 48 earthworms 48 groundwater aquifers 48 intestinal bacteria 48 hydrological cycle 48 harmful microorganisms 48 oxygenated 48 freshwaters 48 mycelium 48 bioaccumulation 48 nutrient absorption 48 rumen 48 macroinvertebrates 48 polluted groundwater 48 anoxia 48 diatoms 48 hydrogen ions 48 microscopic organisms 48 nitrogen fixing 48 harmful algae blooms 48 Algal 48 compost heaps 48 mineral salts 47 Hydrogen sulfide 47 detoxifies 47 carcinogenic compounds 47 thick mucus 47 forbs 47 cyanobacteria 47 pathogenic organisms