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 .

Clasament

Stilul vizual

Opţiuni

Comutare șablon

Restaurare activitate salvată automat: ?