Related by context. Frequent words. (Click for all words.) 71 diatoms 61 marine invertebrates 60 cyanobacteria 59 nitrogen fixation 58 alga 57 terrestrial ecosystems 57 phytoplankton 57 marine organisms 56 trophic 56 organism 56 organisms 56 myoglobin 56 single celled 55 marine sediments 55 zooplankton 55 archaea 55 abundances 55 dinoflagellates 54 eukaryotic 54 Supplementary Fig 54 sticklebacks 54 Wolbachia 54 copepods 53 Archaea 53 multicellular 53 Daphnia 53 speciation 53 mycobacteria 53 microfossils 53 single celled organisms 53 olivine 53 morphologies 53 taxa 52 oxygen isotopes 52 gobies 52 protozoan 52 ocean acidity 52 morphology 52 rhodopsin 52 calcite 52 nitrogen fixing 52 chitin 52 eukaryotes 52 microscopic organisms 52 microbiota 52 microorganism 52 micelles 51 sediments 51 intertidal 51 algal 51 species 51 clades 51 microbes 51 isotopic 51 morphological 51 biota 51 multicellular organisms 51 phylogenetic 51 zeolites 51 microscopic algae 51 chloroplasts 51 bacterium 51 arthropod 50 melanosomes 50 atmospheric CO 50 Argentine ants 50 anoxic 50 acidification 50 superoxide 50 Phytoplankton 50 vertebrate 50 benthic 50 photosynthetic 50 invertebrates 50 freshwater mussels 50 atmospheric carbon dioxide 50 Caenorhabditis elegans 50 lake sediments 50 mammalian 50 interglacial period 50 chloroplast 50 glycoproteins 50 anthocyanin 50 mammals 49 C. elegans 49 plankton 49 hydride 49 Plasmodium 49 crocodilians 49 PrP 49 Neandertal 49 subfamily 49 nacre 49 geomorphology 49 microbe 49 baker yeast 49 sediment cores 49 trilobites 49 cultured cells 49 sea squirt 49 bacterial