Related by context. Frequent words. (Click for all words.) 58 admiral asks 56 AP Interview CG 55 deplete oxygen 55 Polar Regions 54 ultra violet radiation 54 terrestrial ecosystems 53 Phytoplankton 53 icecaps 53 stratospheric ozone 53 atmospheric methane 53 hydrological cycle 53 stratospheric ozone layer 53 greenhouse gases GHGs 52 harmful ultraviolet radiation 52 carbonic acid 52 Nitrogen oxides 51 cryosphere 51 atmospheric CO2 51 interglacial period 50 Ozone layer 50 mesosphere 50 phytoplankton blooms 50 thawing permafrost 50 glacier melt 50 atmospheric carbon dioxide 49 polar caps 49 species extinctions 49 radiative 49 freshwater ecosystems 49 thermogenic 49 Cyanobacteria 49 atmospheric CO 49 upwellings 49 polycyclic aromatic hydrocarbons PAHs 49 acidifying 49 planktonic 49 mid latitudes 49 isoprene 49 plankton blooms 49 glaciers melt 48 tropospheric 48 worsening droughts 48 Melting glaciers 48 polar regions 48 Snowball Earth 48 biosphere 48 albedo 48 Ocean acidification 48 melting permafrost 48 radiative forcing 48 poleward 48 ocean acidity 48 lithosphere 48 glacial melting 48 marine sediments 48 aerosol particles 48 Aquifers 48 methane hydrate 48 glacial melt 47 temperate zones 47 marine ecosystems 47 oceans 47 Sulfur dioxide 47 ultraviolet UV radiation 47 ultraviolet UV light 47 Gamma rays 47 ecosystems 47 oxidizes 47 acidification 47 Arctic permafrost 47 greenhouse gases GHG 47 ozone depletion 47 greenhouse warming 47 oxidising 47 aquatic ecosystems 47 sun ultraviolet rays 47 Volcanic eruptions 47 depletion 47 Astaxanthin 47 organic acids 47 biota 47 Younger Dryas 47 Solar flares 47 -# degrees Fahrenheit [002] 47 NADH 47 Ultraviolet light 47 phytoplankton 46 seals sea lions 46 mountain glaciers 46 harmful ultraviolet rays 46 foraminifera 46 sodium potassium 46 retreating glaciers 46 Acidic 46 equatorial Pacific Ocean 46 Manmade 46 magmas 46 sulphates 46 ozone layer 46 anthropogenic 46 ocean acidification