Related by context. Frequent words. (Click for all words.) 59 periodic droughts 59 warmer wetter 58 Warming temperatures 57 Spider mites 57 prolonged droughts 57 Unseasonably warm 57 wetter winters 56 severe droughts 56 Soil erosion 56 drier summers 56 hotter drier 56 frequent droughts 55 Severe drought 55 pasture grasses 55 monsoonal rains 54 cooler wetter 54 humid climates 54 warmer drier 54 soil salinity 54 Melting glaciers 53 Tonight Cloudy 53 winterkill 53 groundwater depletion 53 alkaline soils 53 acidic soils 52 Unusually warm 52 Devastating floods 52 overharvest 52 Adverse weather 52 salination 52 thaw cycles 52 soil erosion 52 insect populations 52 Warm temperatures 52 salinization 52 floods droughts 52 Droughts 51 refugia 51 freeze thaw cycles 51 Unseasonably cold 51 overgrazing 51 upwellings 51 stratospheric ozone layer 51 streambanks 51 Northerly winds 51 windblown dust 51 Heavy snows 51 Colder temperatures 51 pest infestation 51 Powdery mildew 51 milder winters 51 ultra violet radiation 51 La Ninas 50 decaying vegetation 50 nitrogen deposition 50 Meteorologists predict 50 peat swamps 50 erratic monsoon 50 moist soils 50 Unseasonably 50 mountain snowpacks 50 thawing permafrost 50 locust infestation 50 desiccation 50 temperature inversions 50 overfishing pollution 50 Armyworms 50 Seasonal rains 50 Therein lurks 50 rampant deforestation 49 potent greenhouse gas 49 sparse vegetation 49 woody vegetation 49 beetle infestations 49 worsening droughts 49 La Nina phenomenon 49 arid regions 49 Sedimentation 49 Southerly winds 49 Poyang Lake 49 apple scab 49 Searing heat 49 Invasive plants 49 unseasonal weather 49 reduced visibilities 49 toxic algae blooms 49 Incessant rains 49 harsh climates 49 Infestations 49 arid climates 49 Unseasonably warm weather 49 terrestrial ecosystems 49 El Nino phenomenon 49 carbon dioxide concentrations 48 Schistosomiasis 48 Heavy snowfalls 48 warmer winters 48 soils 48 glacial retreat 48 acidify 48 shelterbelts