SEXTA CATEGORIA - EXPOSICIONES EN CLASE

Economia ecologica

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Economia ecologica2

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Economia vs ecologiaaa3

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Economía4

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La economia ambiental5

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Desarrollo sostenible6

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Desarrollo sostenible8

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Capa de ozono9

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Efecto invernadero10

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Hora del planeta corregidoo..!11

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Desarrollo sostenido materia

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