Круговорот азота в природе
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![[Пятиминутка Био] Круговорот азота в природе. Азотфиксирующие бактерии автотрофы?](https://sun9-43.userapi.com/jrSZLiWiJ4eMofrFImqww7oBPDTsaH19MVwbkQ/2aS02gHX-HI.jpg)
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