Nitrogen gas in air, Nitrogen in animals, Nitrogen in plants, Nitrogen in dead bodies and wastes (e.g., faeces), Nitrates in soil, Nitrites in soil, Ammonium compounds in soil, Dentrification, Absorption by roots, Nitrogen fixation , Decomposition .

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Visuaalne stiil

Valikud

Vaheta malli

Kas taastada automaatselt salvestatud ?