Related by context. Frequent words. (Click for all words.) 67 photosynthetic organisms 65 microscopic algae 65 Cyanobacteria 65 zooxanthellae 64 unicellular 64 diatoms 63 wormlike 63 bacterium Escherichia coli 63 organisms 62 Penicillium 62 tunicates 62 planktonic 62 mycorrhizal fungi 62 methanogens 61 Phytoplankton 61 symbiotic bacteria 61 amphipods 61 decaying vegetation 61 alga 61 fruiting bodies 61 microbes 61 dinoflagellates 60 Chlamydomonas 60 microorganisms 60 gastropods 60 phytochrome 60 mucilage 60 single celled 60 Firmicutes 59 microenvironments 59 rotifers 59 myoglobin 59 Shewanella 59 protozoan 59 cone snails 59 prokaryotes 59 marine organisms 59 flatworms 59 echinoderms 59 lichens 59 diatom 58 symbionts 58 fungi 58 biological molecules 58 slime molds 58 Flowering plants 58 amoebae 58 Amino acids 58 dentine 58 luteolin 58 reproduce asexually 58 marine invertebrates 58 microorganism 58 Streptomyces 58 photosynthesize 58 chloroplasts 58 Volvox 58 aragonite 58 organism 58 nitrogen fixing 58 microscopic organisms 58 threadlike 57 salt crystals 57 flatworm 57 Methylmercury 57 epiphytes 57 coevolution 57 gut microbes 57 aquatic invertebrates 57 cambium 57 neural crest cells 57 waxy substance 57 mycelium 57 larvae hatch 57 deplete oxygen 57 phloem 57 nematode worms 57 quaggas 57 cellular membranes 57 nanoscale particles 57 bacterium E. coli 57 killifish 57 micro organisms 57 Scientists theorize 56 phytoplankton blooms 56 erythrocytes 56 fluorescent probes 56 single celled organisms 56 Saturated fats 56 vacuoles 56 protozoa 56 exudates 56 bacterial colonies 56 Microorganisms 56 nanoporous 56 freshwater habitats 56 nanobubbles 56 purines 56 amyloid fibrils 56 Archaea 56 microbiota