User:P Gerson

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Olá sou Paulo Gerson tenho 10 anos e adoro ler livros de Biologia e Ciêcias.

Imagem do dia
Imagem do dia
Idosa nepalesa preparando comida em uma cozinha tradicional
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Mídia do dia
Mídia do dia
Stainless steel is made from iron ore by aluminothermic reaction. To better separate the resulting metal from the slag, cryolite and calcium fluoride was added to the mixture. The result was a stainless steel ingot.
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