Related by context. Frequent words. (Click for all words.) 79 Greenland ice 71 polar ice 69 Antarctica 64 glaciers 63 Antarctic Peninsula 62 permafrost 60 Arctic Ocean 60 Antarctic 57 glacier 55 Greenland 55 melting ice 55 Earth crust 53 Arctic 53 plate tectonics 52 polar 52 British Antarctic Survey 52 earth crust 51 atmospheric carbon dioxide 51 polar regions 51 icebergs 50 oceans 50 melting glaciers 49 Glaciers 48 seafloor 48 glacial 48 Ellesmere Island 48 ocean acidification 48 atmospheric CO2 47 ocean currents 47 volcanism 47 marine ecosystems 47 acidification 46 oceanic 46 Martian surface 46 sediments 46 magma 46 ice melts 46 sedimentary 45 melting 45 geologic 45 Himalayan glaciers 45 coral reefs 45 ice 45 seabed 44 ozone layer 44 volcanic activity 44 ocean 44 extinctions 44 arctic 44 ozone depletion 43 reefs 43 water vapor 42 troposphere 42 biosphere 42 sediment 42 coral reef 42 subsurface 42 tropics 42 plankton 42 neutron star 42 polar bears 42 ocean depths 42 tectonic 41 carbon dioxide 41 sea 41 oceanographers 41 tropical forests 41 molten rock 41 basalt 41 mass extinction 41 mammoths 41 tundra 41 geological 41 Carbon dioxide 41 ice floes 41 peatlands 41 corals 41 ice crystals 41 methane 41 volcanic eruptions 41 Geophysical Research 41 caldera 41 lava flows 40 salinity 40 Little Ice Age 40 CO2 40 marine organisms 40 #.#C [002] 40 marine ecosystem 40 geologically 40 Enceladus 40 crevasses 40 Saturn moon 40 Polar bears 40 krill 40 cosmic rays 40 snowpack 40 ecosystems 40 Martian atmosphere 39 WMO 39 mineralogy