The Black Fog
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Around 1780, when forest fires season in Europe had finally ended, there was a disater in Boston that killed hundreds. It was called "The Black Fog, " and despite the terror it caused, it helped raise awareness about pollution. Raising some enviormental factors, it was discovered that a volcano was to blame for this catastrophe. A volcano eruption thousands of miles away sent massive amounts of heavy Carbon Monoxide into the air. The winds carried it towards Boston.
Because Carbon Monoxide is a lot heavier than nitrogen or oxygen in the atmosphere, it got gathered in an upside down bowl shape around Boston, and trapped in the cold air, not letting warm air or temperate wind currents pass. This caused an extremely bitter winter with temperatures below 0 and over 6 inches of snow. As cold nitrogen tried to rise, it switched places with the pollution from forest fires already present, plus the carbon monoxide from the volcano eruption. A cold, black, deadly fog creeeped over the streets of Boston. Because of the snow, people couln't go outside, and they were forced to stay in their homes, breathing the dirty air. Thousands died because of Carbon Monoxide poisoning.
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Complex Sentence
Key:
Complex Sentence