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Poluição da água e técnicas de tratamento
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ISBN10: 620763716X
ISBN13: 9786207637164
Publisher: Edicoes Nosso Conhecimento
Published: Jun 21 2024
Pages: 60
Weight: 0.22
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786207637164
Publisher: Edicoes Nosso Conhecimento
Published: Jun 21 2024
Pages: 60
Weight: 0.22
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Portuguese
A água é um componente essencial para a sobrevivência da vida na terra, que contém minerais importantes para os seres humanos, as plantas e a vida aquática. A água, um recurso natural de primeira ordem e um bem nacional precioso, é o principal constituinte do ecossistema, sendo um solvente universal e a substância mais abundante na Terra. Cerca de 2% da água do planeta é doce, mas 1,6% está encerrada nas calotes polares e nos glaciares. Outros 0,36% encontram-se no subsolo, em aquíferos e poços. Por conseguinte, apenas cerca de 0,036% do abastecimento total de água do planeta está acessível em lagos e rios. Um número crescente de contaminantes está a entrar nas reservas de água devido à industrialização e à atividade humana. Qualquer alteração física, química ou biológica na qualidade da água que afecte negativamente os organismos vivos ou a torne imprópria para as utilizações desejadas é considerada poluição da água.
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