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Searching Rudolf Steiner Lectures by GA number (GA0068)
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   Query type: 
    Query was: carbon
  

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  • Title: Lecture: Problems of Nutrition
    Matching lines:
    • carbon that is finally exhaled as carbon dioxide, while in plants,
    • which absorb carbon to sustain themselves, the reverse is true. In
    • men and plants, that is, exhalation of carbon dioxide in men and
    • absorption of carbon dioxide by plants; exhalation of oxygen by



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