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Pollution
تلوث الهواء يقتل ۰۸۷ الف شخص في افريقيا كل سنة
دراسة نموذجية من وكالة ناسا تشير الى أن العواصف الترابية الصحراوية تسبب الكثير من العبء. تلوث الهواء يتسبب في
by Katherine Bourzac
April 29, 2019
| A version of this story appeared in
Volume 97, Issue 17
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