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American space shuttle
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Saccharose
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Isthmus
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Vocal cord
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ISO 14.001
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Baryon
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Crystalline facies
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Chapping
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Gossan
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Immune complex
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Wilson Cycle
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Electronic configuration
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Kilobar
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Office automation
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Hammam
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Cheiropompholyx
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Hydrometeor
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Rabbit fever
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SACD
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Antiseptic
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Lactose
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Counterfeit medicine
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Moraine
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Drizzle
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Aplysia
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Astrocytoma
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Marginal basin
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Celeriac
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Skarn
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Ethylene
Chronic pollution
Chronic pollution is permanent pollution caused either by repeated or continuous emissions of pollutants, or the presence of very persistent pollutants.
Known or predictable, this type of pollution may vary widely over time.
Chronic pollution of the Aa between 1985 and 1995 from paper mills, factories and urban centres. © F. Lamiot, Wikimedia CC by-sa 3.0
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