Related by context. Frequent words. (Click for all words.) 63 lithosphere 60 landmass 60 landforms 58 icebergs 56 volcanic islands 55 gyre 55 Weddell Sea 55 subduction zones 54 seamount 54 crustal 53 archipelagos 53 glaciers 53 anticyclone 53 equatorial 53 equator 52 atmospheric circulation 52 biomes 52 vortices 52 seamounts 51 volcanism 51 islands 51 continental drift 51 clades 51 tectonic plate 51 mid latitudes 51 subduction zone 51 Earth crust 51 mountain ranges 51 megafauna 50 polar caps 50 landform 50 Tibetan Plateau 50 plate tectonics 50 ocean currents 50 latitudes 49 calcite 49 tectonics 49 temperate zones 49 rock outcrop 49 tetrapods 49 Wilkins Ice Shelf 49 tectonic plates 49 tropics 49 sedimentary basins 49 biota 49 lineages 49 subduction 49 flyways 49 Antarctic Peninsula 49 drainage basins 49 basalts 49 deltas 49 taxa 49 glaciation 49 volcanoes 49 equatorial regions 48 Iapetus 48 aerosol particles 48 earth crust 48 meltwater 48 Gondwana 48 oceans 48 waterspouts 48 magnetosphere 48 subtropics 48 westerlies 48 Homo sapiens 48 biodiversity hotspots 48 El Ninos 48 stratospheric ozone 48 diatoms 48 biosphere 48 convective 47 striations 47 glacial melt 47 lava flows 47 Saturn rings 47 oceanic 47 olivine 47 river deltas 47 sediments 47 peninsular 47 celestial bodies 47 tyrannosaurs 47 icecap 47 mammals 47 single celled organisms 47 spiral galaxies 47 ridges 47 Archaea 47 Neandertals 47 Drake Passage 47 mountain glaciers 47 temperate regions 47 planets 47 troposphere 46 hominids 46 sedimentary rocks 46 equatorial Pacific 46 Late Cretaceous 46 intertidal