Related by context. Frequent words. (Click for all words.) 62 tropical forests 62 biodiversity 60 carbon sequestration 58 deforestation 57 forests 57 carbon dioxide 56 rainforests 54 CO2 54 greenhouse gasses 53 climate change 53 greenhouse gas 53 ecosystems 53 carbon 53 biosphere 53 greenhouse gases 50 carbon dioxide CO2 50 Deforestation 49 pollinators 49 REDD 48 carbon emission 48 greenhouse gas emissions 48 greenhouse emissions 48 habitats 47 coral reefs 47 carbon credits 47 phytoplankton 47 soil erosion 47 rainforest 47 carbon emissions 47 photosynthesis 47 global warming 47 wildlife habitat 46 biomass 46 carbon dioxide emissions 46 planting trees 46 Carbon dioxide 46 oceans 46 greenhouse gas emission 46 Forests 46 habitat 45 carbon offsets 45 methane 45 fossil fuels 45 cropland 45 wetland 45 GHG emissions 45 wetlands 45 bioenergy 45 Kyoto Protocol 45 reforestation 45 forest 45 GHG 45 emission reductions 44 ozone layer 44 soils 44 Kyoto protocol 44 grasslands 44 permafrost 44 Climate Change 44 glaciers 44 fossil fuel 44 catchments 44 Biodiversity 44 vegetation 43 corals 43 nutrients 43 ecological 43 arable land 43 woodlands 43 heat trapping gases 43 mangroves 42 grassland 42 nitrogen 42 sustainably 42 species 42 biofuels 42 burning fossil fuels 42 extinctions 42 nutrient 41 CO2 emissions 41 UNFCCC 41 emission reduction 41 reducing carbon emissions 41 freshwater 41 emissions 41 polluters 41 conservation 41 emitters 41 Montreal Protocol 41 desertification 41 water vapor 41 polar regions 41 Climate 40 climate 40 conserving 40 crop yields 40 forestry 40 aerosols 40 offsets 40 flora 40 invasive species