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Stack colorful 3D cubes labeled with the 17 rare-earth elements, including their symbol, name, and atomic number. Use green cubes for lanthanides, blue for transition elements, and red for radioactive
Asian biologist crouching and taking pictures of rare plants in tropical forest using smartphone
Sliced rare steak with sauce – top view
A Patagonian mara (Dolichotis patagonum), a large rodent native to Argentina, is seen resting on sandy ground at a wildlife enclosure.
Close-up of rare Javan leopard relaxing peacefully on a stone among dense jungle vegetation.

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