Thermal, Hot water from a factory changes the temperature of a river., Radioactive, A nuclear power station leaks harmful waste., Light, Neon signs and office lights in a city create a sky glow., Soil, Dangerous chemicals get into the ground used to grow crops., Water, An oil slick kills and damages marine life., Noise, An airport close to houses is a source of high levels of sound., Land, Rubbish is left at a large dump., Air, Plastic is burnt by people and releases toxic fumes.

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