Related by context. Frequent words. (Click for all words.) 64 ecosystems 63 fragile ecosystems 62 freshwater ecosystems 62 fragile ecology 61 aquatic ecosystems 61 coastal ecosystems 60 aquatic ecosystem 59 aquatic habitats 59 fragile ecosystem 58 forest ecosystems 58 habitats 58 wildlife habitats 58 ocean ecosystems 57 wetland habitats 56 ecologies 55 marine ecosystems 55 biodiversity 54 seagrasses 54 wetlands 53 biota 53 wetland habitat 52 wildlife habitat 52 species extinctions 52 coral reefs 52 ecological 52 coral reef ecosystems 52 tidal wetlands 52 Invasive species 52 marine habitats 52 aquatic habitat 52 freshwater wetlands 51 biologically diverse 51 marine ecosystem 51 waterways 51 biodiversity hotspots 51 terrestrial ecosystems 50 habitat 50 biodiverse 50 habitat fragmentation 50 seagrass beds 50 aquatic species 50 estuaries 50 coastlines 50 bio diversity 49 river deltas 49 conserve biodiversity 49 fauna 49 watersheds 49 reefs 49 ecologically 49 coastal wetlands 49 freshwater mussels 49 aquatic organisms 49 flora 49 rainforests 49 fertile soils 49 insect populations 48 drylands 48 Rainforests 48 tropical forests 48 wildlife 48 species 48 ecology 48 bee populations 48 pristine wilderness 48 Severe drought 48 overgrazing 48 ecosystem 48 nesting habitat 48 livelihoods 47 invasive weeds 47 Amazon Rainforest 47 aquatic creatures 47 freshwater lakes 47 polluted runoff 47 parasitic infections 47 freshwater 47 oceans 47 riparian habitat 47 marine ecology 47 invasive pests 47 arid regions 47 hardwood forests 47 wildernesses 47 tropical rainforests 47 Coral reefs 47 catastrophic wildfires 47 vegetation 47 biosphere 47 waterbirds 47 harmful algal blooms 47 imperiled species 47 endangered whales 47 Boreal Forest 46 Amazon rainforest 46 coastal marshes 46 flora fauna 46 birdlife 46 shorelines 46 invasive species 46 soil erosion