Copper specimen. Copper is one of only a few metals to occur in nature in elemental (native) form. It takes the form of reddish-brown nuggets of metal | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source |
Bildgröße: | 5184 px × 3456 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: |
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