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 How is this determined?
How is this determined?
| water 64 climate change 20 soil 19 precipitation 15 tropical 12 drought 9 weather 9 environment 9 floods 7 nitrogen 6 freshwater 6 Nitrate 5 lakes 5 fish 5 flooding 5 soil moisture 4 radiation 4 Carbon dioxide 4 summer 4 CO2 3 Toxicity 3 solar radiation 3 droughts 3 global warming 3 Atlantic Ocean 3 winter 3 | Nutrients 3 lead 3 Greenland 3 oscillation 2 pollution 2 Silica 2 agriculture 2 Mercury 2 biodiversity 2 salt 2 crops 2 grassland 2 Encephalitis 2 ozone 2 ice sheets 2 Sulfate 2 Imbalance 2 forest ecosystems 2 acidification 2 organics 2 emissions 1 Minerals 1 Phosphorus 1 global change 1 recycling 1 |