Modelo Ficha de Exercícios

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- Como está constituido o meio abiótico.

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- Como são reaproveitados os elementos quimicos dos seres vivos apôs a sua morte?

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- Qual é a origem do carbono, do nitrogénio e da água existentes na natureza?

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- Como que os seres vivos conseguem obter o carbono e o nitrogénio para as suas funções vitais.

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12. Explica como que o C02 passa das plantas para os consumidores e destes de nova volta a atmosfera.

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13. Explica como que o seres vivos libertam a água para a atmosfera, e diga como os animais conseguem obter a água que necessitam.

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