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Apple QuickTime Audio  |  1997-10-08  |  207.0 KB  |  1 channel  |  11,025 sample rate  |  36 seconds
Transcription: Structure of the biosphere. Närungskette, atmospherische ferschmutzung. Was a kreislauf? Scharzdorf-Pilastung im Boden. Structure of the biosphere. Food chain. Atmospheric pollution. Hydrologic cycle. Pollution of food on ground. Pollution of food in water. Structure de la biosphere. Chez n'alimenter. Pollution des aliment aux sols. Pollution des aliment dans l'eau.