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Our transcription: The airborne desert dust blown by the wind consists mainly of particles of rock and mineral grains. But as the wind stream continues around the globe, it also carries with it tiny fragments of plants and animals, ash from coal-fired electrical plants, other industrial detritus and occasionally glassy volcanic ash. This flotsam and jetsam is shuffled and shifted through the atmosphere, storm after storm, until there's hardly a square meter of the Earth's surface that does not contain material blown in at some time from somewhere else.
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