Related by context. Frequent words. (Click for all words.) 61 Ocean acidification 59 ocean acidity 58 ocean acidification 57 Coral reefs 57 marine ecosystems 57 frequent droughts 56 species extinctions 56 ocean ecosystems 56 glaciers melt 56 acidification 55 hotter summers 54 Warming temperatures 54 melting polar 54 coastal ecosystems 54 freshwater ecosystems 54 ecosystems 53 Melting ice 53 terrestrial ecosystems 53 seagrasses 53 coral reefs 53 deplete oxygen 53 overfishing pollution 52 harmful algal blooms 52 corals 52 Volcanic eruptions 52 marine organisms 52 glacial melting 52 Global warming 52 prolonged droughts 51 melting glaciers 51 icecaps 51 floods droughts 51 river deltas 51 acidifying 51 subtropical regions 51 oceans 51 thawing permafrost 50 climate change 50 warmer drier 50 temperate forests 50 glacial retreat 50 reefs 50 marine invertebrates 50 migrating whales 50 Greenland glaciers 49 Migrating birds 49 coral bleaching 49 Polar Regions 49 arid regions 49 aquatic ecosystems 49 atmospheric methane 49 colder winters 49 mountain glaciers 49 heatwaves 49 atmospheric concentrations 49 greenhouse gas concentrations 49 melting permafrost 49 hydrological cycle 49 global warming 49 atmospheric CO 49 atmospheric carbon dioxide 49 potent neurotoxin 49 toxic algae blooms 49 stratospheric ozone 48 Algae blooms 48 marine ecosystem 48 freshwater 48 coral reef ecosystems 48 apex predators 48 fragile ecosystems 48 Cyanobacteria 48 seagrass beds 48 greenhouse warming 48 El Nino warming 48 Microorganisms 48 temperate regions 48 warmer temperatures 48 retreating glaciers 48 Sperm whales 48 insect populations 48 Corals 47 Overfishing 47 Arctic permafrost 47 aquatic habitats 47 glaciers melting 47 melting ice 47 warmer winters 47 microscopic algae 47 ultraviolet UV radiation 47 filter feeders 47 estuaries 47 glacial melt 47 shrinking glaciers 47 insect borne diseases 47 milder winters 47 acidic 47 Northerly winds 47 planktonic 47 temperate zones 47 Southerly winds 47 habitats