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Ele é fundamental para a saúde, mas consumo exige cuidado para não exagerar na dose O recorte ajuda a contextualizar a pauta dentro de Saúde.

Earth's oceans repeatedly lost oxygen and produced metal deposits during the planet's deepest ice ages. An international team of researchers analyzed manganese and other chemical signatures preserved in more than 27,000 ancient seafloor samples collected from six continents.