Related by context. Frequent words. (Click for all words.) 64 ozone depletion 59 hydrological cycle 59 Melting glaciers 58 stratospheric ozone 58 Ozone layer 58 stratospheric ozone layer 57 Ocean acidification 56 species extinctions 55 Nitrogen oxides 55 greenhouse warming 55 ocean acidity 55 rampant deforestation 54 Soil erosion 54 aerosol particles 54 Antarctic ozone 54 atmospheric methane 53 icecaps 53 glacial melting 53 El Nino warming 53 ozone layer 53 anthropogenic 53 La Nina phenomenon 53 acidification 52 thawing permafrost 52 Sulfur dioxide 52 La Nina cooling 52 melting permafrost 52 Desertification 52 prolonged droughts 52 atmospheric CO 51 global warming 51 protective ozone layer 51 atmospheric CO2 51 atmospheric circulation 51 drier summers 51 El Nino phenomenon 51 hotter summers 51 glacial retreat 51 anthropogenic climate 51 terrestrial ecosystems 51 glacier melt 50 floods droughts 50 nutritional deficiency 50 greenhouse gases GHGs 50 Global warming 50 pest infestation 50 endocrine disruption 50 hydrothermal activity 50 worsening droughts 50 bioaccumulation 50 radiative forcing 50 Warming temperatures 50 climate change 50 shrinking glaciers 50 ultraviolet UV radiation 50 acid rain 50 GLOBAL WARMING 50 coral bleaching 50 toxic algae blooms 50 habitat fragmentation 50 frequent droughts 50 Turbidity 50 greenhouse gas concentrations 50 Melting ice 50 mid latitudes 50 equatorial Pacific Ocean 50 reproductive toxicity 50 polar vortex 50 icecap 50 glacial melt 49 upwellings 49 ocean acidification 49 endocrine disrupting chemicals 49 aerosols 49 acidifying 49 retreating glaciers 49 El Niño phenomenon 49 soil erosion 49 mountain glaciers 49 Droughts 49 subtropical regions 49 glacier melting 49 endocrine disruptor 49 atmospheric carbon dioxide 49 El Niños 49 sulfur dioxide SO2 49 ultra violet rays 48 Arctic permafrost 48 glaciers melting 48 aridity 48 degradation 48 insect borne diseases 48 solar irradiance 48 ozone depleting substances 48 desertification 48 greenhouse gasses 48 poleward 48 glaciations 48 ecological degradation 48 sulphates 48 respiratory irritant