Related by context. Frequent words. (Click for all words.) 61 arid 57 semi arid 56 arid regions 54 desiccation 54 climatic conditions 53 climatic 52 droughts 51 prolonged drought 51 dryness 50 salinity 50 arid desert 50 desertification 49 temperate regions 49 savannahs 49 Desertification 48 temperate 48 atmospheric CO2 47 glaciation 47 deserts 47 subtropics 47 Droughts 47 anthropogenic 46 soils 46 drought 46 dry spells 46 lowlands 46 Climatic 46 parched 45 milder winters 45 equatorial 45 scarcity 45 snowpacks 45 cold winters 45 grasslands 45 Little Ice Age 45 tropics 44 temperatures 44 climatological 44 wetness 44 savanna 44 climates 44 monsoon rainfall 44 latitudes 44 irrigated agriculture 44 desolation 44 Sahel 44 biosphere 44 Arid 44 topography 44 crop yields 43 boreal 43 Tibetan Plateau 43 overgrazing 43 mid latitudes 43 atmospheric circulation 43 fecundity 43 plains 43 mountain glaciers 43 tropical climates 43 climate 43 desert 43 harsh winters 43 rainfall 43 urbanization 42 wetter 42 El Niño 42 boreal forests 42 drier 42 microclimate 42 flora 42 monsoons 42 arable lands 42 croplands 42 dieback 42 Saharan 42 extremes 42 acidification 42 humidity 42 savannah 42 hydrological 42 dry spell 42 aquifers 42 coldness 42 clime 41 daytime temperatures 41 warmer winters 41 microclimates 41 grassland 41 warmth 41 melting glaciers 41 hydrologic 41 depletion 41 insect populations 41 acidic soil 41 lowland 41 biodiversity 41 glaciers 41 albedo 41 subtropical 41 atmospheric carbon dioxide 41 soil fertility