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Que peut-on dire à propos des terres rares ? - Elles nécessitent un processus d'extraction polluant diffusant des éléments toxiques. - Elles sont recyclées à 20%. - Elles partagent des propriétés électromagnétiques spécifiques. - Elles sont très rares dans la croûte terrestre. - Elles sont extraites pour leur grande majorité au Congo - Elles sont nécessaires à la production des équipements numériques.

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