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Der Umweltschutz. Fertige Schüler der 10. Klasse MBOU- Schule № 1 g.Arkadaka Region Saratow Andrey Kuznetsov Kopf: Lehrer der Biologie und Ökologie Tatyana Kuznetsova. In den letzten Jahrzehnten begann sich die Umwelt auf unserer Erde zu verandern.

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der umweltschutz

Der Umweltschutz

FertigeSchülerder 10. Klasse

MBOU-Schule № 1 g.Arkadaka

Region Saratow

AndreyKuznetsov

Kopf:

Lehrer derBiologie und Ökologie

Tatyana Kuznetsova

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