Drought, , Flooding, , Tornado, , Tsunami, , Earthquake, , Cyclone, , Avalanche, , Hurricane, , Wildfire, , Acid Rain, , Air pollution, , Water pollution, , Soil pollution, , Global warming, , Greenhouse effect, , Climate change, , Extinction of endangered species, , Fossil fuel depletion, , Ozone depletion, , Polar ice melting, , Sea level rise, , Increased carbon footprint, , Deforestation, , Overpopulation, , Desertification, .

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