Related by context. Frequent words. (Click for all words.) 48 floods droughts 46 coastal erosion 46 melting permafrost 45 species extinctions 43 droughts 43 melting ice 43 coastlines 42 shoreline erosion 42 freshwater lakes 42 Melting ice 42 shorelines 42 overfishing 42 melting polar 42 ocean acidification 41 melting glaciers 41 marine ecosystems 41 coral reefs 41 oceans 41 coral bleaching 41 ice 41 reefs 41 marine habitats 40 overexploitation 40 Global warming 40 seagrass beds 40 ocean ecosystems 40 habitats 40 ice melts 40 tidal surges 40 salinity 39 coastal ecosystems 39 Coral reefs 39 harmful algal blooms 39 lakes 39 aquatic species 39 inshore waters 39 freshwater 39 global warming 38 polar bear habitat 38 algae blooms 38 coastal waters 38 Overfishing 38 marine biodiversity 38 climate change 38 El Ninos 38 atmospheric carbon dioxide 38 sandbars 38 habitat 38 melting Arctic 38 ecosystems 38 eutrophication 38 intertidal 38 estuaries 38 floods landslides 38 aquatic ecosystems 38 acidification 37 coral 37 epidemics 37 Droughts 37 extinctions 37 glacial lakes 37 migratory routes 37 droughts floods 37 toxic algae 37 oxygen starved 37 snow melt 37 shoreline 37 coastal marshes 37 winterkill 37 tides 37 marine ecosystem 37 prolonged drought 37 algal blooms 37 marine organisms 37 seawalls 37 Desertification 37 biodiversity 36 invasive species 36 oxygen depletion 36 permafrost 36 coral reef 36 wetlands 36 temperate zones 36 warmer winters 36 overharvesting 36 lake 36 insect infestations 36 coastal 36 catastrophic wildfires 36 equatorial regions 36 carbon sinks 36 deforestation 36 manmade 36 fragile ecosystems 36 pandemics 36 silting 36 tidal wetlands 36 desertification 36 longline fishing 36 inland waters 36 storm surges