Related by context. Frequent words. (Click for all words.) 66 photosynthesizing 62 respire 61 photosynthetic bacteria 61 photosynthesize 60 photosynthetic organisms 60 oxidise 59 decomposers 58 absorbs carbon dioxide 57 Diatoms 56 coral polyps 56 Scientists theorize 56 Gamma rays 56 Ultraviolet light 55 UV irradiation 55 decaying vegetation 54 Calcium carbonate 54 Fruit flies 54 unicellular 54 Geobacter 54 plankton blooms 54 microscopic bugs 54 Spider mites 54 Neutron stars 54 reactive nitrogen 54 Ultraviolet radiation 53 Cyanobacteria 53 Thrips 53 photosynthetic 53 phytoplankton blooms 53 endothermic 53 copepod 53 nitrogenous 53 flatworms 53 methane CH4 53 carbon sequestering 53 biodegraded 53 zooxanthellae 53 dinoflagellates 53 electrically conducting 52 naturally occuring 52 symbiotic bacteria 52 volcanic lava 52 woody shrubs 52 isoprene 52 silica nanoparticles 52 pinhead sized 52 nematode worms 52 Flowering plants 52 photosynthesis 52 mycelium 52 bacterium Escherichia coli 52 microscopic algae 52 potent greenhouse gas 52 wormlike 52 fungi bacteria 52 yellowish orange 52 atmospheric nitrogen 51 interstellar clouds 51 reproduce asexually 51 anaerobically 51 ultra violet radiation 51 denature 51 Tiny particles 51 C. botulinum 51 pine pollen 51 nutrient uptake 51 inflowing 51 photochemistry 51 absorbs sunlight 51 ionize 51 cadmium selenide 51 microorganism 51 algal biomass 51 inorganic compounds 51 fruiting bodies 51 pigment melanin 51 Microalgae 51 Cosmic rays 51 inorganic mercury 51 glow brightly 51 cone snails 51 Fluorescent bulbs 51 cellular membranes 51 saline soils 51 chloroplasts 51 bioelectricity 51 oxidising 51 phytochrome 51 Anaerobic digestion 51 belowground 51 micro organism 51 ultraviolet UV rays 51 stomata 51 fungal spores 51 planktonic 51 plasmodium 51 nitrogen fixing 50 oocysts 50 Nitrogen oxides 50 bacterium Clostridium botulinum 50 waterlily