Related by context. Frequent words. (Click for all words.) 66 supercontinent 65 landmasses 59 lithosphere 57 Ross Ice Shelf 56 continental drift 53 Wilkins Ice Shelf 53 ocean ridges 53 Gondwana 53 glaciation 52 plate tectonics 52 icecaps 52 continental crust 51 megafauna 51 oceanic crust 51 volcanic islands 51 Younger Dryas 51 solar nebula 50 Earth crust 50 volcanism 50 Weddell Sea 50 subduction 50 tectonics 49 terrestrial ecosystems 49 lavas 49 meteoroid 49 marine sediments 49 tectonic plate 48 atmospheric circulation 48 crustal 48 subduction zone 48 Greenland glaciers 48 glaciers 48 hominins 48 vortices 48 interglacial period 48 tetrapods 47 hydrological cycle 47 Antarctic Peninsula 47 sedimentary basins 47 equatorial regions 47 latitudinal 47 gyre 47 retreating glaciers 47 prokaryotes 47 single celled organisms 46 ocean currents 46 landmass 46 H. erectus 46 mass migrations 46 mammoths 46 calcite 46 Little Ice Age 46 subduction zones 46 Cretaceous Period 46 Iapetus 46 sediments 46 icebergs 46 stratospheric ozone 46 magnetic reconnection 46 interglacial 46 heliosheath 46 scarps 46 Late Cretaceous 46 magma chamber 46 equatorial 46 Mesozoic 45 melting permafrost 45 Arctic Oscillation 45 glacier 45 iron fertilization 45 anticyclone 45 Antarctic peninsula 45 landforms 45 mid latitudes 45 glacial melting 45 Volcanic eruptions 45 stromatolites 45 Antarctica 45 mountain glaciers 45 Computer simulations 45 multicellular 45 Argentine ants 45 basalts 45 glacial melt 45 graphene sheets 45 temperate zones 45 theropod 45 earth crust 44 Paleozoic 44 tropics 44 Earth magnetosphere 44 Pleistocene 44 exciton 44 lava flows 44 Ordovician 44 Scambos 44 Pleistocene era 44 Voyager spacecraft 44 Quaternary 44 Bose Einstein condensate 44 trilobites