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As terras raras são um grupo de 17 elementos químicos fundamentais para a fabricação de tecnologias modernas, como smartphones, turbinas eólicas, baterias, equipamentos médicos e sistemas de defesa. Apesar do nome, não são escassas, mas ocorrem em concentrações baixas, o que torna sua extração e separação desafiadoras. A China é o principal país produtor e detém mais de 60% da produção mundial. #terrasraras #geografia #curiosidades
21
Comentario
Uma operação integrada entre órgãos federais e estaduais destruiu 150 escavadeiras e causou um prejuízo estimado em mais de R$ 226 milhões ao garimpo ilegal na Terra Indígena Sararé, em Pontes e Lacerda . De acordo com o Ibama, já foram inutilizados motores, acampamentos, veículos e estruturas usadas na exploração irregular. Foram encontrados 14 abrigos subterrâneos com estoques de alimentos e equipamentos.
8
Comentario
Máquina de tijolo de terrazzo, equipamento de máquina de tijolo de terrazzo, produção profissional de fabricantes de equipamentos de máquina de tijolo de terrazzo
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3
Cargando
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