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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