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(Click for frequent words.) 61 peat bog 60 Peat bogs 59 peatland 59 moorlands 59 peatlands 58 peat lands 58 Peatlands 57 permafrost 57 peat soils 57 peat swamps 56 heather moorland 56 Boreal forests 56 grassland 55 boreal forests 55 heathlands 55 Arctic permafrost 55 woodlands 54 eucalypt forests 54 boreal regions 54 blanket bog 54 wetland vegetation 53 reedbeds 53 fertile soils 53 conifer forests 53 saline aquifers 52 Peatland 52 coniferous forest 52 Appy Sluijs 52 fens 52 heaths 52 sediments deposited 52 grasslands 52 permafrost melts 52 Sphagnum 52 forested watersheds 52 temperate forests 52 ancient woodland 51 porous sandstone 51 forests 51 woodland 51 subalpine 51 Melting glaciers 51 upland forests 51 sagebrush steppe 51 Tropical rainforests 51 uplands 51 trembling aspen 51 melting permafrost 51 Greenland icesheet 51 sedge meadow 50 reed canary grass 50 reed beds 50 chalk grassland 50 sphagnum 50 Knotweed 50 eucalypt forest 50 fertile topsoil 50 subglacial lakes 50 heathland 50 woody weeds 50 soils 50 decaying vegetation 50 tinder dry forests 50 broadleaf trees 50 shrubland 50 streambanks 50 beech forests 50 taiga forest 50 decayed vegetation 50 coniferous forests 50 virgin forest 50 vegetation 50 Okataina 49 Pine beetles 49 lakebeds 49 hay meadows 49 icesheets 49 tussock 49 bogland 49 drumlins 49 ungrazed 49 Alpine glaciers 49 duff layer 49 watertable 49 river catchments 49 alpine ecosystems 49 lowland heath 49 white clawed crayfish 49 boreal forest 49 sphagnum moss 49 cattail marshes 49 wildflower meadows 49 larch trees 49 understorey 49 remnant vegetation 49 permafrost thaws 49 Amazonian forest 49 plantlife 49 bracken 49 riparian zones 49 garigue 49 savannah grasslands 49 woody vegetation 49 intensively farmed 49 sparsely vegetated 49 deepwater corals 49 temperate rainforest 49 saline aquifer 49 machair 49 barrens 48 greenland 48 eucalypts 48 ponded 48 Boreal forest 48 conifer forest 48 seedbank 48 acquifers 48 rotting vegetation 48 pine forests 48 clathrates 48 carbon sequestered 48 acid sulphate soils 48 tundra 48 conifer plantations 48 coniferous trees 48 sedimentary deposits 48 underground aqueducts 48 atmospheric methane 48 spruce fir forest 48 hardwood forests 48 evergreen forests 48 lodgepole pine forests 48 Sugar maples 48 flood basalts 48 peaty soil 48 prairie potholes 48 deciduous forests 48 waterlogged soils 48 mountain snowpacks 48 algal mats 48 forest ecosystems 47 boreal 47 chalk downland 47 rhododendron thickets 47 glaciers melted 47 peat fires 47 thawing permafrost 47 Pleistocene Ice Age 47 volcanic lava 47 lake sediments 47 understory vegetation 47 marram grass 47 desiccating 47 whitebark pines 47 Laurentide Ice Sheet 47 SSSIs 47 conifer trees 47 unfarmed 47 rangeland grasses 47 cypress pine 47 freshwater ecosystems 47 shrublands 47 tropical savanna 47 moorland 47 meltwater 47 poplar trees 47 glacial meltwater 47 sedimentary layers 47 kahikatea 47 eucalyptus leaves 47 Lodgepole pine 47 broad leaved trees 47 drained peat bogs 47 glaciers 47 revegetating 47 burning peat bogs 47 spruce fir forests 47 glaciers retreated 47 wetland ecosystems 47 freshwater habitats 47 sequoia groves 47 sediment cores 47 alpine valleys 47 Arctic tundra 47 reedbed 47 hydrological cycle 47 limestone grassland 47 cypress tupelo 47 seafloor sediments 47 oak savannas 47 gravelly soils 47 coastland 47 melaleuca trees 47 vegetations 46 smoldering peat 46 groundwater aquifers 46 Bunyip Ridge 46 carbon sinks 46 Permafrost 46 arable soils 46 shallow aquifers 46 wetland 46 parched farmland 46 rowan trees 46 aquifers 46 cork oaks 46 birch forests 46 arable farmland 46 Thawing permafrost 46 underground geologic formations 46 alluvial plain 46 coppice 46 tropical forests 46 glacial geology 46 conifers 46 freshwater springs 46 wetland habitats 46 subsoils 46 tropical peatlands 46 Brisbane Ranges 46 jack pine trees 46 permafrost soils 46 lodgepole pine forest 46 subarctic regions 46 roadside verges 46 pines oaks 46 temperate grasslands 46 samphire 46 subglacial 46 equatorial rainforests 46 volcanic basalt 46 seabeds 46 calcareous soils 46 woody shrubs 46 pearl mussel 46 kauri trees 46 Heavily forested 46 fecal pellets 46 freshwater aquifers 46 replenish aquifers 46 Strzelecki Ranges 46 sandy loam soil 46 Mesopotamian Marshlands 46 sediments 46 coppiced 46 blister rust 46 deep saline aquifers 46 broadleaf woodland 46 Aquifers 46 resprout 46 headwater streams 46 treeless tundra 46 Okareka 46 grass sagebrush 46 geologic formations 45 virgin forests 45 Gambel oak 45 sub glacial lakes 45 broadleaved trees 45 remnant bushland 45 prairie pothole 45 depleted aquifers 45 Laurentide ice sheet 45 alpine glaciers 45 sandy ridges 45 bacterial mats 45 forested lands 45 acquifer 45 drained peatlands 45 Lake Vostok 45 denuded slopes 45 meadows woodlands 45 conifer plantation 45 terrestrial ecosystems 45 marshes swamps 45 Floodplains 45 swamp grasses 45 forested uplands 45 moisture retentive soil 45 Paroo River 45 grassy woodlands 45 herbage 45 longleaf 45 Siberian permafrost 45 alluvial soils 45 peaty 45 meadows 45 taiga 45 intensively cultivated 45 warmer wetter winters 45 marine sediments 45 refugia 45 Scientific Interest SSSI 45 Antarctica EPICA 45 dense rainforests 45 unlogged forests 45 limber pine 45 ponderosas 45 Shoal Lakes 45 topsoils 45 foresting 45 crunches underfoot 45 basalt lava 45 greenhouse gas nitrous oxide 45 Algae blooms 45 BBOWT 45 woodland grassland 45 clearcut logging 45 geological formations 45 Loddon Avoca 45 Peat bog 45 temperate rainforests 45 hemlock forests 45 prairie grassland 45 mosses 45 wetter winters 45 oak beech 45 lochs 45 crop residues 45 deoxygenated 45 semidesert 45 tarns 45 wetland soils 45 virgin rainforests 45 beech forest 45 wetlands 45 carboniferous 45 deciduous plants 45 permafrost degradation 45 Boreal Forest 45 #cm 6in 45 grazed pastures 45 freshwater pearl mussels 45 sequestering carbon 45 prairies wetlands 45 breeding waders 45 bark beetle infestations 45 Canada Boreal Forest 45 snowpack melts 45 wetland ecosystem 45 poplars 45 lichens 45 karst limestone 45 Saltcedar 45 potent greenhouse gas 45 Riesling grapes 45 shrub steppe habitat 45 mud volcanoes 45 tropical coral reefs 45 silver birch 45 tributary streams 45 impermeable shale 45 smog haze 45 heathland fires 45 Eyjafjoell volcano 45 Prolonged droughts 45 rills 45 oak hickory forest 45 meadowland 45 holm oaks 45 severe frosts 45 Caledonian pine 45 overgrazed 45 afforested 45 Techa River 45 riparian woodlands 45 ecoregions 45 Arctic Shelf 45 Hattah Lakes 45 arable crops 45 lakes 45 semiarid regions 45 replanting forests 45 Volcanic eruptions 45 stubbles 45 hardwood trees 45 toxic dioxins 45 grassland habitat 45 Siberian Traps 45 huarango 45 retreating glaciers 45 terra preta 45 overgrazing 45 Late Paleozoic 45 atmospheric nitrogen 45 nitrogen deposition 45 atmospheric moisture 45 biodiverse forests 45 carbon dioxide concentrations 44 icesheet 44 Large swathes 44 woody plants 44 croplands 44 alluvial plains 44 peat swamp forest 44 spinifex 44 saltmarsh 44 delicate ecosystems 44 infertile soils 44 Large tracts 44 woodfuel 44 wilding pines 44 whooper swan 44 tamarisks 44 cork oak forests 44 hottest driest 44 pine forest 44 conifer needles 44 disused mines 44 Shiveluch 44 Laki eruption 44 parched forests 44 lichen 44 dyking 44 peat swamp forests 44 wood chippings 44 peat extraction 44 icecaps 44 methane 44 overlying layers 44 melted glacial 44 beaver ponds 44 sequestering CO2 44 unmineable coal seams 44 ponderosa pines 44 Steep slopes 44 glacier melts 44 Wollemi National 44 cratons 44 uncultivated land 44 revegetated 44 longleaf pine forest 44 wetlands flood plains 44 retreating glacier 44 thawing tundra 44 Wollemi pines 44 piñon pine 44 fencelines 44 eucalypt trees 44 birch trees 44 Vernal pools 44 sediment 44 ponderosa pine trees 44 grasses 44 alder trees 44 methane hydrate 44 pasture grasses 44 Heretaunga Plains 44 lodgepole pine trees 44 fenland 44 beech trees 44 halogenated gases 44 watercourse 44 mangrove vegetation 44 woody debris 44 snowcaps 44 nonnative weeds 44 draining aquifers 44 meadowfoam 44 silver birches 44 wetland grasses 44 overstory 44 conker trees 44 mussel beds 44 prevailing westerly winds 44 mesic 44 spotted knapweed 44 boreal ecosystems 44 tablelands 44 fir forests 44 undergrowth 44 pasturelands 44 eucalyptus forests 44 acid sulfate 44 cinder cones 44 lahars 44 Azolla 44 Water hyacinth 44 moorland fires 44 western Siberia 44 groundwater aquifer 44 Eucalyptus plantations 44 atmospheric CO2 44 Thorthormi 44 Soils 44 pristine rainforest 44 clearcuts 44 Purple loosestrife 44 severe droughts 44 salt cedars 44 broadleaved 44 clay subsoil 44 shelterbelts 44 eroding shorelines 44 bryophytes 44 Forested 44 saline formations 44 Amazon rainforests 44 hypoxic zone 44 loess 44 Eyjafjallajokul volcano 44 evergreen needles 44 Amazonian rainforest 44 heathland habitat 44 sequesters carbon 44 droughty 44 drystone walls 44 prairie grasslands 44 sticky sap 44 streamside habitat 44 lowland 44 fragile marine ecosystems 44 chalky soils 44 hybrid poplars 44 paleomagnetic 44 River Wandle 44 heavier rainfalls 44 aquatic ecosystems 43 Macquarie Marshes 43 alpine pastures 43 Siple Dome 43 primeval forests 43 bogs 43 Methane hydrates 43 Gas hydrates 43 unburnt 43 aspen 43 virgin cypress 43 tidal salt marsh 43 biotopes 43 bottomland hardwoods 43 tropical savannah 43 subarctic 43 Thicker cloud 43 absorbs carbon dioxide 43 fungus spores 43 basins 43 Mokhovoye 43 rocky crags 43 culm 43 snowdrops 43 diatom species 43 moulins 43 capercaillie 43 glaciers receded 43 riversides 43 flora 43 insect outbreaks 43 topsoil 43 buffel grass 43 carbon isotope ratios 43 degraded soils 43 ecosystems 43 Arable land 43 increased storminess 43 tussocks 43 colder winters 43 agrichar 43 softwoods 43 Himalayan balsam 43 mountain meadows 43 Kilimanjaro glaciers 43 lowland forests 43 aspen groves 43 fine grained sediment 43 Shatura 43 melting snowpacks 43 tussock grasslands 43 Japanese Knotweed 43 groundwaters 43 wetland habitat 43 Arctic icecap 43 receding glacier 43 pinon pines 43 lakebed sediments 43 glacial till 43 absorbs CO2 43 saline intrusion 43 melting glacier 43 rangelands 43 Plunging temperatures 43 Warmer oceans 43 underground coal seams 43 Warming temperatures 43 aspen forests 43 pine plantations 43 cypress forest 43 unlined pits 43 habitats 43 tallgrass prairies 43 shredded pine bark 43 treelines 43 plankton blooms 43 Pejar Dam 43 jack pines 43 reef habitats 43 white oak acorns 43 bottomland hardwood forest 43 biogases 43 basalt formations 43 coppicing 43 wolverine habitat 43 carbon dioxide 43 sawfly larvae 43 parched soils 43 Strathcona Fiord 43 brook trout habitat 43 riparian forests 43 Preseli Hills 43 middens 43 riparian vegetation 43 rivers 43 toxins leaching 43 spur throated locusts 43 verdant forests 43 oak savannahs 43 grassland ecosystem 43 prussic acid 43 larch forests 43 peat swamp 43 blowdowns 43 pine plantation 43 upland habitat 43 bottomland forests 43 marshes 43 Pilliga 43 montane forest 43 lowland heathland 43 streamside forests 43 Qinghai Tibet plateau 43 Lophelia 43 hydrologic cycle 43 Tibetan Plateau 43 cropland 43 warmer wetter 43 oilseed rape crops 43 nitrogen leaching 43 Wicken Fen 43 sparse vegetation 43 limestone outcrops 43 ancient woodlands 43 synthetic nitrogen fertilizer 43 scrubby vegetation 43 orang utan habitat 43 fibrous roots 43 methane CH4 43 piñon trees 43 grassland ecosystems 43 broadleaf evergreens 43 recharge groundwater 43 riparian habitats 43 heaviest snowfalls 43 barren hillsides 43 melting snow 43 cork oak 43 prairie grasses 43 ponderosa pine Douglas fir 43 glacial melt 43 sedge grass 43 damming rivers 43 coccolithophores 43 cockle beds 43 hickories 43 tableland 43 headwater stream 43 deciduous trees 43 longleaf pine ecosystem 43 peatland forests 43 Overflowing rivers 43 Lake Balkhash 43 cyanobacterial blooms 43 drier soils 43 Googong 43 atmospheric carbon dioxide 43 methane clathrates 43 glaciers melt 43 pristine forests 43 Great Artesian Basin 43 blowdown 43 Mount Tarawera 43 volcanic eruptions 43 biodiverse ecosystems 43 Mt Ruapehu crater 43 hedgerows 43 warship Vasa 43 hardy shrubs 43 orchids bloom 43 CO -2 43 knapweed 43 warmer drier summers 43 silts 43 common scoter 43 mature lodgepole pine 43 polar oceans 43 hemlock groves 43 Brunt Ice Shelf 43 Ediacara 43 juniper woodlands 43 Patagonian glaciers 43 Mild winters 43 Alsek River valley 43 mildly alkaline 43 saltmarshes 43 subalpine meadows 43 swards 43 lodgepole forests 43 riparian forest 43 toxic hydrogen sulfide 43 overthrust belt 43 brownish haze 43 moors 43 Menindee Lakes 43 massifs 43 degraded forests 43 groundwater basins 43 glacial silt 43 coral habitats 43 Otway Ranges 43 frost heaving 43 NVZs 43 Lake Untersee 43 moist soils 43 wildfires ravaging 43 subalpine fir 43 forestry plantations 43 Droughts 43 longleaf pine forests 42 piñon juniper 42 wetlands prairies 42 upland habitats 42 nitrates phosphates 42 caribou calving 42 drumlin 42 impenetrable thickets 42 streambank 42 mountaintop glaciers 42 hydrate deposits 42 climatic variability 42 stratospheric ozone layer 42 bunchgrass 42 sugar beet 42 coulees 42 Polluted runoff 42 reforested 42 freshwater marsh 42 pinewoods 42 bloomed profusely 42 saline soils 42 Nene Washes 42 methane seeps 42 compost heaps 42 forested 42 ecologically sensitive wetlands 42 Heavy snowfalls 42 coldwater streams 42 Peconic Estuary 42 biodiverse regions 42 malarial swamp 42 parched landscape 42 unlogged 42 bracken fern 42 shortleaf pine 42 climatic extremes 42 pine beetle infestations 42 silicate particles 42 hoar frost 42 karez 42 rainforests 42 forest 42 hemlock trees 42 bark beetle outbreak 42 sugar maples 42 Wadden Sea 42 highly erodible 42 Vegetation 42 disused quarries 42 woodsmoke 42 watermilfoil 42 sandy soils 42 hill forts 42 Brackish water 42 Salinity 42 bottomland 42 Hydroelectric dams 42 Boreal Forests 42 Invasive plants 42 Taimyr Peninsula 42 Alliston Aquifer 42 seafloor sediment 42 broadleaves 42 beetle infestations 42 massive Myrdalsjokull glacier 42 shallow depressions 42 biodiversity hotspots 42 marginal cropland 42 oxidized mercury 42 Yateley Heath Hampshire 42 Seagrasses 42 redgum 42 ponderosa pine forests 42 limestone bedrock 42 carcinogenic fibers 42 arable farms 42 treeless hills 42 recolonised 42 Melting snow 42 jarrah forest 42 saxifrage 42 windswept slopes 42 seagrass meadows 42 lodgepole pine 42 peat 42 pollute groundwater downstream 42 Arctic Archipelago 42 biosequestration 42 Prescribed burning 42 tectonic plate movements 42 tigers roamed 42 sooty particles 42 biotope 42 glacial lakes 42 southerly latitudes 42 fireweed 42 sequester carbon 42 airborne pollutants 42 hydric soil 42 midlatitude 42 Kocet 42 larches 42 yellow starthistle 42 grazing paddocks 42 Pesanggrahan River 42 reintroducing wolves 42 colder drier 42 noxious smog 42 willows 42 marshy wetlands 42 Spotted knapweed 42 coalbeds 42 saltwater marshes 42 tundra vegetation 42 winged euonymus 42 rockweed 42 acrid smog 42 depleting aquifers 42 marshland 42 tuberous roots 42 acid sulphate 42 decomposing trash 42 underground aquifers 42 saturated catchments 42 waterholes 42 mountain ranges 42 Vast swathes 42 tundras 42 woody stems 42 deplete oxygen 42 spurge Euphorbia 42 firs pines 42 eucalypt 42 biochar 42 absorb carbon dioxide 42 lacustrine 42 orangutan populations 42 billabongs 42 ozone O3 42 riparian corridors 42 seabird colonies 42 volcanic plumes 42 Weddell Sea 42 hardwood forest 42 gas hydrates 42 soluble sugars 42 charity Plantlife 42 watercourses 42 ecoregion 42 aspen trees 42 Transantarctic Mountains 42 Overgrazing 42 wildlife habitats 42 saturated soils 42 mussel populations 42 Amundsen Sea 42 bogs swamps 42 Tonle Sap lake 42 permafrost thaw 42 freshwater wetland 42 warmer winters 42 banksias 42 Untreated sewage 42 saltcedar 42 lava fountains 42 fertilize crops 42 shelterbelt 42 oxidises 42 methanogenic bacteria 42 gulleys 42 spartina grass 42 grassland habitats 42 rice paddy fields 42 lodgepole forest 42 blackland prairie 42 hydrological cycles 42 purple heather 42 temperature inversions 42 silt laden 42 forest understory 42 Tinder dry 42 volcanic ashes 42 nonnative invasive 42 hotter drier 42 Alaskan tundra 42 microfossils 42 lowlands 42 brushwood 42 lowland rainforests 42 rapeseed 42 oceanic currents 42 bushlands 42 fellside 42 arable 42 starthistle 42 endophytes 42 Dormice 42 calderas 42 cultivatable 42 grasslands wetlands 42 glacier retreat 42 beeches 42 aspen stands 42 freshwater swamps 42 woody stalks 42 toxic algal bloom 42 wildernesses 42 overcutting 42 reed bed 42 redcedar 42 CO2 concentrations 42 icefields 42 Hotter drier 42 silver birch trees 42 grass cuttings 42 Wilsons Prom 42 sulfuric compounds 42 sphagnum peat moss 42 forest fires 42 Warmer wetter weather 42 recharge aquifers 42 sloes 42 Louisiana coastal marshes 42 coastal mangrove forests 42 loosestrife 42 Qaidam Basin 42 unburned fuels 42 downland 42 alder thickets 42 megafires 42 friable soil 42 Bialowieza 42 arctic tundra 42 Tar sands 42 receding glaciers 42 hummocky 42 terminal moraine 42 atmospheric CO2 concentrations 42 glacial fjord 42 eskers 42 microfossil 42 Explosive eruptions 42 Toxic sludge 42 holm oak 42 earthy smell 42 rubbly 42 Yangtze basin 42 nutria ate 42 lowland forest 42 Douglas fir seedlings 42 herbaceous vegetation 42 Woolly mammoths 42 Ninglick 42 soil salinity 42 woody vines 42 glacial retreat 42 mosses lichens 42 Algal bloom 42 Prescribed fires 42 compacted soils 41 headwater 41 dikes dams 41 coal seams 41 cereal crops 41 Conservation SACs 41 coral ecosystems 41 algaes 41 spruce budworm 41 limestone caves 41 glacial moraines 41 Wet Tropics 41 acidic oceans